misc: BOOL to bool

74 files changed, 614 insertions, 613 deletions

diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 5f0c668b33..73569cfa07 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -95,7 +95,7 @@ const F32 SKEW_MAX	=  0.95f;
 const F32 SCULPT_MIN_AREA = 0.002f;
 const S32 SCULPT_MIN_AREA_DETAIL = 1;
 
-BOOL gDebugGL = FALSE; // See settings.xml "RenderDebugGL"
+bool gDebugGL = FALSE; // See settings.xml "RenderDebugGL"
 
 bool check_same_clock_dir( const LLVector3& pt1, const LLVector3& pt2, const LLVector3& pt3, const LLVector3& norm)
 {
@@ -1081,7 +1081,7 @@ bool LLProfile::generate(const LLProfileParams& params, bool path_open,F32 detai
 
 
 
-BOOL LLProfileParams::importFile(LLFILE *fp)
+bool LLProfileParams::importFile(LLFILE *fp)
 {
 	const S32 BUFSIZE = 16384;
 	char buffer[BUFSIZE];	/* Flawfinder: ignore */
@@ -1139,11 +1139,11 @@ BOOL LLProfileParams::importFile(LLFILE *fp)
 		}
 	}
 
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLProfileParams::exportFile(LLFILE *fp) const
+bool LLProfileParams::exportFile(LLFILE *fp) const
 {
 	fprintf(fp,"\t\tprofile 0\n");
 	fprintf(fp,"\t\t{\n");
@@ -1152,11 +1152,11 @@ BOOL LLProfileParams::exportFile(LLFILE *fp) const
 	fprintf(fp,"\t\t\tend\t%g\n", getEnd());
 	fprintf(fp,"\t\t\thollow\t%g\n", getHollow());
 	fprintf(fp, "\t\t}\n");
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLProfileParams::importLegacyStream(std::istream& input_stream)
+bool LLProfileParams::importLegacyStream(std::istream& input_stream)
 {
 	const S32 BUFSIZE = 16384;
 	char buffer[BUFSIZE];	/* Flawfinder: ignore */
@@ -1211,11 +1211,11 @@ BOOL LLProfileParams::importLegacyStream(std::istream& input_stream)
 		}
 	}
 
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLProfileParams::exportLegacyStream(std::ostream& output_stream) const
+bool LLProfileParams::exportLegacyStream(std::ostream& output_stream) const
 {
 	output_stream <<"\t\tprofile 0\n";
 	output_stream <<"\t\t{\n";
@@ -1224,7 +1224,7 @@ BOOL LLProfileParams::exportLegacyStream(std::ostream& output_stream) const
 	output_stream <<"\t\t\tend\t" << getEnd() << "\n";
 	output_stream <<"\t\t\thollow\t" << getHollow() << "\n";
 	output_stream << "\t\t}\n";
-	return TRUE;
+	return true;
 }
 
 LLSD LLProfileParams::asLLSD() const
@@ -1680,7 +1680,7 @@ bool LLDynamicPath::generate(const LLPathParams& params, F32 detail, S32 split,
 }
 
 
-BOOL LLPathParams::importFile(LLFILE *fp)
+bool LLPathParams::importFile(LLFILE *fp)
 {
 	const S32 BUFSIZE = 16384;
 	char buffer[BUFSIZE];	/* Flawfinder: ignore */
@@ -1795,11 +1795,11 @@ BOOL LLPathParams::importFile(LLFILE *fp)
 			LL_WARNS() << "unknown keyword " << " in path import" << LL_ENDL;
 		}
 	}
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLPathParams::exportFile(LLFILE *fp) const
+bool LLPathParams::exportFile(LLFILE *fp) const
 {
 	fprintf(fp, "\t\tpath 0\n");
 	fprintf(fp, "\t\t{\n");
@@ -1820,11 +1820,11 @@ BOOL LLPathParams::exportFile(LLFILE *fp) const
 	fprintf(fp,"\t\t\tskew\t%g\n", getSkew());
 
 	fprintf(fp, "\t\t}\n");
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLPathParams::importLegacyStream(std::istream& input_stream)
+bool LLPathParams::importLegacyStream(std::istream& input_stream)
 {
 	const S32 BUFSIZE = 16384;
 	char buffer[BUFSIZE];	/* Flawfinder: ignore */
@@ -1935,11 +1935,11 @@ BOOL LLPathParams::importLegacyStream(std::istream& input_stream)
 			LL_WARNS() << "unknown keyword " << " in path import" << LL_ENDL;
 		}
 	}
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLPathParams::exportLegacyStream(std::ostream& output_stream) const
+bool LLPathParams::exportLegacyStream(std::ostream& output_stream) const
 {
 	output_stream << "\t\tpath 0\n";
 	output_stream << "\t\t{\n";
@@ -1960,7 +1960,7 @@ BOOL LLPathParams::exportLegacyStream(std::ostream& output_stream) const
 	output_stream <<"\t\t\tskew\t" << getSkew() << "\n";
 
 	output_stream << "\t\t}\n";
-	return TRUE;
+	return true;
 }
 
 LLSD LLPathParams::asLLSD() const
@@ -2099,7 +2099,7 @@ LLVolume::~LLVolume()
 	mHullIndices = NULL;
 }
 
-BOOL LLVolume::generate()
+bool LLVolume::generate()
 {
 	LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
@@ -2143,8 +2143,8 @@ BOOL LLVolume::generate()
 		}
 	}
 
-	BOOL regenPath = mPathp->generate(mParams.getPathParams(), path_detail, split);
-	BOOL regenProf = mProfilep->generate(mParams.getProfileParams(), mPathp->isOpen(),profile_detail, split);
+	bool regenPath = mPathp->generate(mParams.getPathParams(), path_detail, split);
+	bool regenProf = mProfilep->generate(mParams.getProfileParams(), mPathp->isOpen(),profile_detail, split);
 
 	if (regenPath || regenProf ) 
 	{
@@ -2207,11 +2207,11 @@ BOOL LLVolume::generate()
 			mFaceMask |= id;
 		}
 		LL_CHECK_MEMORY
-		return TRUE;
+		return true;
 	}
 
 	LL_CHECK_MEMORY
-	return FALSE;
+	return false;
 }
 
 void LLVolumeFace::VertexData::init()
@@ -3334,12 +3334,12 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 
 
 
-BOOL LLVolume::isCap(S32 face)
+bool LLVolume::isCap(S32 face)
 {
 	return mProfilep->mFaces[face].mCap; 
 }
 
-BOOL LLVolume::isFlat(S32 face)
+bool LLVolume::isFlat(S32 face)
 {
 	return mProfilep->mFaces[face].mFlat;
 }
@@ -4324,7 +4324,7 @@ BOOL equalTriangle(const S32 *a, const S32 *b)
 	return FALSE;
 }
 
-BOOL LLVolumeParams::importFile(LLFILE *fp)
+bool LLVolumeParams::importFile(LLFILE *fp)
 {
 	//LL_INFOS() << "importing volume" << LL_ENDL;
 	const S32 BUFSIZE = 16384;
@@ -4364,21 +4364,21 @@ BOOL LLVolumeParams::importFile(LLFILE *fp)
 		}
 	}
 
-	return TRUE;
+	return true;
 }
 
-BOOL LLVolumeParams::exportFile(LLFILE *fp) const
+bool LLVolumeParams::exportFile(LLFILE *fp) const
 {
 	fprintf(fp,"\tshape 0\n");
 	fprintf(fp,"\t{\n");
 	mPathParams.exportFile(fp);
 	mProfileParams.exportFile(fp);
 	fprintf(fp, "\t}\n");
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLVolumeParams::importLegacyStream(std::istream& input_stream)
+bool LLVolumeParams::importLegacyStream(std::istream& input_stream)
 {
 	//LL_INFOS() << "importing volume" << LL_ENDL;
 	const S32 BUFSIZE = 16384;
@@ -4414,17 +4414,17 @@ BOOL LLVolumeParams::importLegacyStream(std::istream& input_stream)
 		}
 	}
 
-	return TRUE;
+	return true;
 }
 
-BOOL LLVolumeParams::exportLegacyStream(std::ostream& output_stream) const
+bool LLVolumeParams::exportLegacyStream(std::ostream& output_stream) const
 {
 	output_stream <<"\tshape 0\n";
 	output_stream <<"\t{\n";
 	mPathParams.exportLegacyStream(output_stream);
 	mProfileParams.exportLegacyStream(output_stream);
 	output_stream << "\t}\n";
-	return TRUE;
+	return true;
 }
 
 LLSD LLVolumeParams::sculptAsLLSD() const
@@ -4498,12 +4498,12 @@ const F32 MIN_CONCAVE_PATH_WEDGE = 0.111111f;	// 1/9 unity
 
 // returns TRUE if the shape can be approximated with a convex shape 
 // for collison purposes
-BOOL LLVolumeParams::isConvex() const
+bool LLVolumeParams::isConvex() const
 {
 	if (!getSculptID().isNull())
 	{
 		// can't determine, be safe and say no:
-		return FALSE;
+		return false;
 	}
 	
 	F32 path_length = mPathParams.getEnd() - mPathParams.getBegin();
@@ -4516,7 +4516,7 @@ BOOL LLVolumeParams::isConvex() const
 				 && LL_PCODE_PATH_LINE != path_type) ) )
 	{
 		// twist along a "not too short" path is concave
-		return FALSE;
+		return false;
 	}
 
 	F32 profile_length = mProfileParams.getEnd() - mProfileParams.getBegin();
@@ -4540,36 +4540,36 @@ BOOL LLVolumeParams::isConvex() const
 	if (!convex_profile)
 	{
 		// profile is concave
-		return FALSE;
+		return false;
 	}
 
 	if ( LL_PCODE_PATH_LINE == path_type )
 	{
 		// straight paths with convex profile
-		return TRUE;
+		return true;
 	}
 
-	BOOL concave_path = (path_length < 1.0f) && (path_length > 0.5f);
+	bool concave_path = (path_length < 1.0f) && (path_length > 0.5f);
 	if (concave_path)
 	{
-		return FALSE;
+		return false;
 	}
 
 	// we're left with spheres, toroids and tubes
 	if ( LL_PCODE_PROFILE_CIRCLE_HALF == profile_type )
 	{
 		// at this stage all spheres must be convex
-		return TRUE;
+		return true;
 	}
 
 	// it's a toroid or tube		
 	if ( path_length <= MIN_CONCAVE_PATH_WEDGE )
 	{
 		// effectively convex
-		return TRUE;
+		return true;
 	}
 
-	return FALSE;
+	return false;
 }
 
 // debug
@@ -4647,7 +4647,7 @@ LLFaceID LLVolume::generateFaceMask()
 	return new_mask;
 }
 
-BOOL LLVolume::isFaceMaskValid(LLFaceID face_mask)
+bool LLVolume::isFaceMaskValid(LLFaceID face_mask)
 {
 	LLFaceID test_mask = 0;
 	for(S32 i = 0; i < getNumFaces(); i++)
@@ -4658,7 +4658,7 @@ BOOL LLVolume::isFaceMaskValid(LLFaceID face_mask)
 	return test_mask == face_mask;
 }
 
-BOOL LLVolume::isConvex() const
+bool LLVolume::isConvex() const
 {
 	// mParams.isConvex() may return FALSE even though the final
 	// geometry is actually convex due to LOD approximations.
@@ -4944,7 +4944,7 @@ void LLVolumeFace::freeData()
     destroyOctree();
 }
 
-BOOL LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
 {
 	LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
@@ -4952,7 +4952,7 @@ BOOL LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
     destroyOctree();
 
 	LL_CHECK_MEMORY
-	BOOL ret = FALSE ;
+	bool ret = false ;
 	if (mTypeMask & CAP_MASK)
 	{
 		ret = createCap(volume, partial_build);
@@ -5768,7 +5768,7 @@ void	LerpPlanarVertex(LLVolumeFace::VertexData& v0,
 	vout.setNormal(v0.getNormal());
 }
 
-BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::createUnCutCubeCap(LLVolume* volume, bool partial_build)
 {
 	LL_CHECK_MEMORY		
 
@@ -6000,11 +6000,11 @@ BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build)
 	}
 		
 	LL_CHECK_MEMORY
-	return TRUE;
+	return true;
 }
 
 
-BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::createCap(LLVolume* volume, bool partial_build)
 {
 	if (!(mTypeMask & HOLLOW_MASK) && 
 		!(mTypeMask & OPEN_MASK) && 
@@ -6210,36 +6210,36 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 							(paV[0]*pbV[1] - pbV[0]*paV[1]) +
 							(pbV[0]*p2V[1] - p2V[0]*pbV[1]);
 
-				BOOL use_tri1a2 = TRUE;
-				BOOL tri_1a2 = TRUE;
-				BOOL tri_21b = TRUE;
+				bool use_tri1a2 = true;
+				bool tri_1a2 = true;
+				bool tri_21b = true;
 
 				if (area_1a2 < 0)
 				{
-					tri_1a2 = FALSE;
+					tri_1a2 = false;
 				}
 				if (area_2ab < 0)
 				{
 					// Can't use, because it contains point b
-					tri_1a2 = FALSE;
+					tri_1a2 = false;
 				}
 				if (area_21b < 0)
 				{
-					tri_21b = FALSE;
+					tri_21b = false;
 				}
 				if (area_1ba < 0)
 				{
 					// Can't use, because it contains point b
-					tri_21b = FALSE;
+					tri_21b = false;
 				}
 
 				if (!tri_1a2)
 				{
-					use_tri1a2 = FALSE;
+					use_tri1a2 = false;
 				}
 				else if (!tri_21b)
 				{
-					use_tri1a2 = TRUE;
+					use_tri1a2 = true;
 				}
 				else
 				{
@@ -6251,11 +6251,11 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 
 					if (d1.dot3(d1) < d2.dot3(d2))
 					{
-						use_tri1a2 = TRUE;
+						use_tri1a2 = true;
 					}
 					else
 					{
-						use_tri1a2 = FALSE;
+						use_tri1a2 = false;
 					}
 				}
 
@@ -6316,36 +6316,36 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 							(paV[0]*pbV[1] - pbV[0]*paV[1]) +
 							(pbV[0]*p2V[1] - p2V[0]*pbV[1]);
 
-				BOOL use_tri1a2 = TRUE;
-				BOOL tri_1a2 = TRUE;
-				BOOL tri_21b = TRUE;
+				bool use_tri1a2 = true;
+				bool tri_1a2 = true;
+				bool tri_21b = true;
 
 				if (area_1a2 < 0)
 				{
-					tri_1a2 = FALSE;
+					tri_1a2 = false;
 				}
 				if (area_2ab < 0)
 				{
 					// Can't use, because it contains point b
-					tri_1a2 = FALSE;
+					tri_1a2 = false;
 				}
 				if (area_21b < 0)
 				{
-					tri_21b = FALSE;
+					tri_21b = false;
 				}
 				if (area_1ba < 0)
 				{
 					// Can't use, because it contains point b
-					tri_21b = FALSE;
+					tri_21b = false;
 				}
 
 				if (!tri_1a2)
 				{
-					use_tri1a2 = FALSE;
+					use_tri1a2 = false;
 				}
 				else if (!tri_21b)
 				{
-					use_tri1a2 = TRUE;
+					use_tri1a2 = true;
 				}
 				else
 				{
@@ -6356,11 +6356,11 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 
 					if (d1.dot3(d1) < d2.dot3(d2))
 					{
-						use_tri1a2 = TRUE;
+						use_tri1a2 = true;
 					}
 					else
 					{
-						use_tri1a2 = FALSE;
+						use_tri1a2 = false;
 					}
 				}
 
@@ -6439,7 +6439,7 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 		norm[i].load4a(normal.getF32ptr());
 	}
 
-	return TRUE;
+	return true;
 }
 
 void CalculateTangentArray(U32 vertexCount, const LLVector4a *vertex, const LLVector4a *normal,
@@ -6657,18 +6657,18 @@ void LLVolumeFace::fillFromLegacyData(std::vector<LLVolumeFace::VertexData>& v,
 	}
 }
 
-BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::createSide(LLVolume* volume, bool partial_build)
 {
 	LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
 	LL_CHECK_MEMORY
-	BOOL flat = mTypeMask & FLAT_MASK;
+	bool flat = mTypeMask & FLAT_MASK;
 
 	U8 sculpt_type = volume->getParams().getSculptType();
 	U8 sculpt_stitching = sculpt_type & LL_SCULPT_TYPE_MASK;
-	BOOL sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
-	BOOL sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
-	BOOL sculpt_reverse_horizontal = (sculpt_invert ? !sculpt_mirror : sculpt_mirror);  // XOR
+	bool sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
+	bool sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
+	bool sculpt_reverse_horizontal = (sculpt_invert ? !sculpt_mirror : sculpt_mirror);  // XOR
 	
 	S32 num_vertices, num_indices;
 
@@ -7039,10 +7039,10 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 	
 	LLVector4a top;
 	top.setSub(pos[0], pos[mNumS*(mNumT-2)]);
-	BOOL s_bottom_converges = (top.dot3(top) < 0.000001f);
+	bool s_bottom_converges = (top.dot3(top) < 0.000001f);
 
 	top.setSub(pos[mNumS-1], pos[mNumS*(mNumT-2)+mNumS-1]);
-	BOOL s_top_converges = (top.dot3(top) < 0.000001f);
+	bool s_top_converges = (top.dot3(top) < 0.000001f);
 
 	if (sculpt_stitching == LL_SCULPT_TYPE_NONE)  // logic for non-sculpt volumes
 	{
@@ -7090,20 +7090,20 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 	}
 	else  // logic for sculpt volumes
 	{
-		BOOL average_poles = FALSE;
-		BOOL wrap_s = FALSE;
-		BOOL wrap_t = FALSE;
+		bool average_poles = false;
+		bool wrap_s = false;
+		bool wrap_t = false;
 
 		if (sculpt_stitching == LL_SCULPT_TYPE_SPHERE)
-			average_poles = TRUE;
+			average_poles = true;
 
 		if ((sculpt_stitching == LL_SCULPT_TYPE_SPHERE) ||
 			(sculpt_stitching == LL_SCULPT_TYPE_TORUS) ||
 			(sculpt_stitching == LL_SCULPT_TYPE_CYLINDER))
-			wrap_s = TRUE;
+			wrap_s = true;
 
 		if (sculpt_stitching == LL_SCULPT_TYPE_TORUS)
-			wrap_t = TRUE;
+			wrap_t = true;
 			
 		
 		if (average_poles)
@@ -7168,7 +7168,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 
 	LL_CHECK_MEMORY
 
-	return TRUE;
+	return true;
 }
 
 //adapted from Lengyel, Eric. "Computing Tangent Space Basis Vectors for an Arbitrary Mesh". Terathon Software 3D Graphics Library, 2001. http://www.terathon.com/code/tangent.html
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index 0158ca9bcd..4ea0604f26 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -201,7 +201,7 @@ const U8 LL_SCULPT_FLAG_MASK = LL_SCULPT_FLAG_INVERT | LL_SCULPT_FLAG_MIRROR;
 
 const S32 LL_SCULPT_MESH_MAX_FACES = 8;
 
-extern BOOL gDebugGL;
+extern bool gDebugGL;
 
 class LLProfileParams
 {
@@ -254,11 +254,11 @@ public:
 	
 	void copyParams(const LLProfileParams &params);
 
-	BOOL importFile(LLFILE *fp);
-	BOOL exportFile(LLFILE *fp) const;
+	bool importFile(LLFILE *fp);
+	bool exportFile(LLFILE *fp) const;
 
-	BOOL importLegacyStream(std::istream& input_stream);
-	BOOL exportLegacyStream(std::ostream& output_stream) const;
+	bool importLegacyStream(std::istream& input_stream);
+	bool exportLegacyStream(std::ostream& output_stream) const;
 
 	LLSD asLLSD() const;
 	operator LLSD() const { return asLLSD(); }
@@ -390,11 +390,11 @@ public:
 
 	void copyParams(const LLPathParams &params);
 
-	BOOL importFile(LLFILE *fp);
-	BOOL exportFile(LLFILE *fp) const;
+	bool importFile(LLFILE *fp);
+	bool exportFile(LLFILE *fp) const;
 
-	BOOL importLegacyStream(std::istream& input_stream);
-	BOOL exportLegacyStream(std::ostream& output_stream) const;
+	bool importLegacyStream(std::istream& input_stream);
+	bool exportLegacyStream(std::ostream& output_stream) const;
 
 	LLSD asLLSD() const;
 	operator LLSD() const { return asLLSD(); }
@@ -582,11 +582,11 @@ public:
 	const LLPathParams &getPathParams() const {return mPathParams;}
 	LLPathParams &getPathParams() {return mPathParams;}
 
-	BOOL importFile(LLFILE *fp);
-	BOOL exportFile(LLFILE *fp) const;
+	bool importFile(LLFILE *fp);
+	bool exportFile(LLFILE *fp) const;
 
-	BOOL importLegacyStream(std::istream& input_stream);
-	BOOL exportLegacyStream(std::ostream& output_stream) const;
+	bool importLegacyStream(std::istream& input_stream);
+	bool exportLegacyStream(std::ostream& output_stream) const;
 
 	LLSD sculptAsLLSD() const;
 	bool sculptFromLLSD(LLSD& sd);
@@ -652,7 +652,7 @@ public:
 	const U8& getSculptType() const     { return mSculptType;                   }
 	bool isSculpt() const;
 	bool isMeshSculpt() const;
-	BOOL isConvex() const;
+	bool isConvex() const;
 
 	// 'begin' and 'end' should be in range [0, 1] (they will be clamped)
 	// (begin, end) = (0, 1) will not change the volume
@@ -870,7 +870,7 @@ private:
 	void freeData();
 public:
 
-	BOOL create(LLVolume* volume, BOOL partial_build = FALSE);
+	bool create(LLVolume* volume, BOOL partial_build = FALSE);
 	void createTangents();
 	
 	void resizeVertices(S32 num_verts);
@@ -990,9 +990,9 @@ private:
     LLOctreeNode<LLVolumeTriangle, LLVolumeTriangle*>* mOctree;
     LLVolumeTriangle* mOctreeTriangles;
 
-	BOOL createUnCutCubeCap(LLVolume* volume, BOOL partial_build = FALSE);
-	BOOL createCap(LLVolume* volume, BOOL partial_build = FALSE);
-	BOOL createSide(LLVolume* volume, BOOL partial_build = FALSE);
+	bool createUnCutCubeCap(LLVolume* volume, bool partial_build = false);
+	bool createCap(LLVolume* volume, bool partial_build = false);
+	bool createSide(LLVolume* volume, bool partial_build = false);
 };
 
 class LLVolume : public LLRefCount
@@ -1036,10 +1036,10 @@ public:
 	void regen();
     void genTangents(S32 face);
 
-	BOOL isConvex() const;
-	BOOL isCap(S32 face);
-	BOOL isFlat(S32 face);
-	BOOL isUnique() const									{ return mUnique; }
+	bool isConvex() const;
+	bool isCap(S32 face);
+	bool isFlat(S32 face);
+	bool isUnique() const									{ return mUnique; }
 
 	S32 getSculptLevel() const                              { return mSculptLevel; }
 	void setSculptLevel(S32 level)							{ mSculptLevel = level; }
@@ -1069,7 +1069,7 @@ public:
 
 	LLFaceID generateFaceMask();
 
-	BOOL isFaceMaskValid(LLFaceID face_mask);
+	bool isFaceMaskValid(LLFaceID face_mask);
 	static S32 sNumMeshPoints;
 
 	friend std::ostream& operator<<(std::ostream &s, const LLVolume &volume);
@@ -1100,7 +1100,7 @@ private:
 	void sculptGenerateSpherePlaceholder();
 
 protected:
-	BOOL generate();
+	bool generate();
 	void createVolumeFaces();
 public:
 	bool unpackVolumeFaces(std::istream& is, S32 size);
@@ -1128,7 +1128,7 @@ public:
 	LLAlignedArray<LLVector4a,64> mMesh;
 	
 	
-	BOOL mGenerateSingleFace;
+	bool mGenerateSingleFace;
 	face_list_t mVolumeFaces;
 
 public:
diff --git a/indra/llmath/xform.cpp b/indra/llmath/xform.cpp
index 5d8b93d5e8..8999abda60 100644
--- a/indra/llmath/xform.cpp
+++ b/indra/llmath/xform.cpp
@@ -52,12 +52,12 @@ LLXform* LLXform::getRoot() const
 	return (LLXform*)root;
 }
 
-BOOL LLXform::isRoot() const
+bool LLXform::isRoot() const
 {
 	return (!mParent);
 }
 
-BOOL LLXform::isRootEdit() const
+bool LLXform::isRootEdit() const
 {
 	return (!mParent);
 }
diff --git a/indra/llmath/xform.h b/indra/llmath/xform.h
index 54b0f6d9ec..96c4ab4d51 100644
--- a/indra/llmath/xform.h
+++ b/indra/llmath/xform.h
@@ -86,7 +86,7 @@ public:
 
 	void getLocalMat4(LLMatrix4 &mat) const { mat.initAll(mScale, mRotation, mPosition); }
 
-	inline BOOL setParent(LLXform *parent);
+	inline bool setParent(LLXform *parent);
 
 	inline void setPosition(const LLVector3& pos);
 	inline void setPosition(const F32 x, const F32 y, const F32 z);
@@ -119,8 +119,8 @@ public:
 
 	LLXform* getParent() const { return mParent; }
 	LLXform* getRoot() const;
-	virtual BOOL isRoot() const;
-	virtual BOOL isRootEdit() const;
+	virtual bool isRoot() const;
+	virtual bool isRootEdit() const;
 
 	const LLVector3&	getPosition()  const	    { return mPosition; }
 	const LLVector3&	getScale() const			{ return mScale; }
@@ -159,12 +159,12 @@ protected:
 
 };
 
-BOOL LLXform::setParent(LLXform* parent)
+bool LLXform::setParent(LLXform* parent)
 {
 	// Validate and make sure we're not creating a loop
 	if (parent == mParent)
 	{
-		return TRUE;
+		return true;
 	}
 	if (parent)
 	{
@@ -174,13 +174,13 @@ BOOL LLXform::setParent(LLXform* parent)
 			if (cur_par == this)
 			{
 				//warn("LLXform::setParent Creating loop when setting parent!");
-				return FALSE;
+				return false;
 			}
 			cur_par = cur_par->mParent;
 		}
 	}
 	mParent = parent;
-	return TRUE;
+	return true;
 }
 
 void LLXform::setPosition(const LLVector3& pos)			
diff --git a/indra/llmessage/llassetstorage.cpp b/indra/llmessage/llassetstorage.cpp
index 60d95c3367..2f76e686ec 100644
--- a/indra/llmessage/llassetstorage.cpp
+++ b/indra/llmessage/llassetstorage.cpp
@@ -354,9 +354,9 @@ void LLAssetStorage::_init(LLMessageSystem *msg,
 
 LLAssetStorage::~LLAssetStorage()
 {
-    mShutDown = TRUE;
+    mShutDown = true;
     
-    _cleanupRequests(TRUE, LL_ERR_CIRCUIT_GONE);
+    _cleanupRequests(true, LL_ERR_CIRCUIT_GONE);
 
     if (gMessageSystem)
     {
@@ -378,10 +378,10 @@ void LLAssetStorage::setUpstream(const LLHost &upstream_host)
 
 void LLAssetStorage::checkForTimeouts()
 {
-    _cleanupRequests(FALSE, LL_ERR_TCP_TIMEOUT);
+    _cleanupRequests(false, LL_ERR_TCP_TIMEOUT);
 }
 
-void LLAssetStorage::_cleanupRequests(BOOL all, S32 error)
+void LLAssetStorage::_cleanupRequests(bool all, S32 error)
 {
     F64Seconds mt_secs = LLMessageSystem::getMessageTimeSeconds();
 
@@ -436,7 +436,7 @@ void LLAssetStorage::_cleanupRequests(BOOL all, S32 error)
 
 }
 
-BOOL LLAssetStorage::hasLocalAsset(const LLUUID &uuid, const LLAssetType::EType type)
+bool LLAssetStorage::hasLocalAsset(const LLUUID &uuid, const LLAssetType::EType type)
 {
     return LLFileSystem::getExists(uuid, type);
 }
@@ -450,7 +450,7 @@ bool LLAssetStorage::findInCacheAndInvokeCallback(const LLUUID& uuid, LLAssetTyp
         llassert(callback != NULL);
     }
 
-    BOOL exists = LLFileSystem::getExists(uuid, type);
+    bool exists = LLFileSystem::getExists(uuid, type);
     if (exists)
     {
         LLFileSystem file(uuid, type);
@@ -482,7 +482,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
                                   LLAssetType::EType type, 
                                   LLAssetStorage::LLGetAssetCallback callback,
                                   void *user_data, 
-                                  BOOL is_priority)
+                                  bool is_priority)
 {
     LL_DEBUGS("AssetStorage") << "LLAssetStorage::getAssetData() - " << uuid << "," << LLAssetType::lookup(type) << LL_ENDL;
 
@@ -523,7 +523,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
         return;
     }
 
-    BOOL exists = LLFileSystem::getExists(uuid, type);
+    bool exists = LLFileSystem::getExists(uuid, type);
     LLFileSystem file(uuid, type);
     U32 size = exists ? file.getSize() : 0;
 
@@ -547,7 +547,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
             file.remove();
         }
         
-        BOOL duplicate = FALSE;
+        bool duplicate = false;
         
         // check to see if there's a pending download of this uuid already
         for (request_list_t::iterator iter = mPendingDownloads.begin();
@@ -566,7 +566,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
                 
                 // this is a duplicate request
                 // queue the request, but don't actually ask for it again
-                duplicate = TRUE;
+                duplicate = true;
             }
         }
         if (duplicate)
@@ -700,7 +700,7 @@ void LLAssetStorage::getEstateAsset(
     EstateAssetType etype,
     LLGetAssetCallback callback, 
     void *user_data, 
-    BOOL is_priority)
+    bool is_priority)
 {
     LL_DEBUGS() << "LLAssetStorage::getEstateAsset() - " << asset_id << "," << LLAssetType::lookup(atype) << ", estatetype " << etype << LL_ENDL;
 
@@ -724,7 +724,7 @@ void LLAssetStorage::getEstateAsset(
         return;
     }
     
-    BOOL exists = LLFileSystem::getExists(asset_id, atype);
+    bool exists = LLFileSystem::getExists(asset_id, atype);
     LLFileSystem file(asset_id, atype);
     U32 size = exists ? file.getSize() : 0;
 
@@ -846,7 +846,7 @@ void LLAssetStorage::getInvItemAsset(
     LLAssetType::EType atype,
     LLGetAssetCallback callback, 
     void *user_data, 
-    BOOL is_priority)
+    bool is_priority)
 {
     LL_DEBUGS() << "LLAssetStorage::getInvItemAsset() - " << asset_id << "," << LLAssetType::lookup(atype) << LL_ENDL;
 
@@ -995,12 +995,12 @@ void LLAssetStorage::uploadCompleteCallback(
         return;
     }
     LLAssetRequest  *req     = (LLAssetRequest *)user_data;
-    BOOL            success  = TRUE;
+    bool            success  = true;
 
     if (result)
     {
         LL_WARNS("AssetStorage") << "LLAssetStorage::uploadCompleteCallback " << result << ":" << getErrorString(result) << " trying to upload file to upstream provider" << LL_ENDL;
-        success = FALSE;
+        success = false;
     }
 
     // we're done grabbing the file, tell the client
@@ -1030,7 +1030,7 @@ void LLAssetStorage::processUploadComplete(LLMessageSystem *msg, void **user_dat
     this_ptr->_callUploadCallbacks(uuid, asset_type, success, LLExtStat::NONE);
 }
 
-void LLAssetStorage::_callUploadCallbacks(const LLUUID &uuid, LLAssetType::EType asset_type, BOOL success, LLExtStat ext_status )
+void LLAssetStorage::_callUploadCallbacks(const LLUUID &uuid, LLAssetType::EType asset_type, bool success, LLExtStat ext_status )
 {
     // SJB: We process the callbacks in reverse order, I do not know if this is important,
     //      but I didn't want to mess with it.
@@ -1348,7 +1348,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
                                                    S32, 
                                                    LLExtStat), 
                                   void *user_data, 
-                                  BOOL is_priority)
+                                  bool is_priority)
 {
     // check for duplicates here, since we're about to fool the normal duplicate checker
     for (request_list_t::iterator iter = mPendingDownloads.begin();
@@ -1391,7 +1391,7 @@ void LLAssetStorage::legacyGetDataCallback(const LLUUID &uuid,
     std::string filename;
 
     // Check if the asset is marked toxic, and don't load bad stuff
-    BOOL toxic = gAssetStorage->isAssetToxic( uuid );
+    bool toxic = gAssetStorage->isAssetToxic( uuid );
 
     if ( !status
          && !toxic )
@@ -1489,9 +1489,9 @@ void LLAssetStorage::reportMetric( const LLUUID& asset_id, const LLAssetType::ET
 
 
 // Check if an asset is in the toxic map.  If it is, the entry is updated
-BOOL LLAssetStorage::isAssetToxic( const LLUUID& uuid )
+bool LLAssetStorage::isAssetToxic( const LLUUID& uuid )
 {
-    BOOL is_toxic = FALSE;
+    bool is_toxic = false;
 
     if ( !uuid.isNull() )
     {
@@ -1499,8 +1499,8 @@ BOOL LLAssetStorage::isAssetToxic( const LLUUID& uuid )
         if ( iter != mToxicAssetMap.end() )
         {   // Found toxic asset
             (*iter).second = LLFrameTimer::getTotalTime() + TOXIC_ASSET_LIFETIME;
-            is_toxic = TRUE;
-        } 
+            is_toxic = true;
+        }
     }
     return is_toxic;
 }
@@ -1509,7 +1509,7 @@ BOOL LLAssetStorage::isAssetToxic( const LLUUID& uuid )
 
 
 // Clean the toxic asset list, remove old entries
-void LLAssetStorage::flushOldToxicAssets( BOOL force_it )
+void LLAssetStorage::flushOldToxicAssets( bool force_it )
 {
     // Scan and look for old entries
     U64 now = LLFrameTimer::getTotalTime();
diff --git a/indra/llmessage/llassetstorage.h b/indra/llmessage/llassetstorage.h
index 274e6a50ad..d9c95485f6 100644
--- a/indra/llmessage/llassetstorage.h
+++ b/indra/llmessage/llassetstorage.h
@@ -232,11 +232,11 @@ public:
 
 	void setUpstream(const LLHost &upstream_host);
 
-	BOOL hasLocalAsset(const LLUUID &uuid, LLAssetType::EType type);
+	bool hasLocalAsset(const LLUUID &uuid, LLAssetType::EType type);
 
 	// public interface methods
 	// note that your callback may get called BEFORE the function returns
-	void getAssetData(const LLUUID uuid, LLAssetType::EType atype, LLGetAssetCallback cb, void *user_data, BOOL is_priority = FALSE);
+	void getAssetData(const LLUUID uuid, LLAssetType::EType atype, LLGetAssetCallback cb, void *user_data, bool is_priority = false);
 
 	/*
 	 * TransactionID version
@@ -259,19 +259,19 @@ public:
 
 	void getEstateAsset(const LLHost &object_sim, const LLUUID &agent_id, const LLUUID &session_id,
 									const LLUUID &asset_id, LLAssetType::EType atype, EstateAssetType etype,
-									 LLGetAssetCallback callback, void *user_data, BOOL is_priority);
+									 LLGetAssetCallback callback, void *user_data, bool is_priority);
 
 	void getInvItemAsset(const LLHost &object_sim,
 						 const LLUUID &agent_id, const LLUUID &session_id,
 						 const LLUUID &owner_id, const LLUUID &task_id, const LLUUID &item_id,
 						 const LLUUID &asset_id, LLAssetType::EType atype,
-						 LLGetAssetCallback cb, void *user_data, BOOL is_priority = FALSE); // Get a particular inventory item.
+						 LLGetAssetCallback cb, void *user_data, bool is_priority = false); // Get a particular inventory item.
 
 	// Check if an asset is in the toxic map.  If it is, the entry is updated
-	BOOL		isAssetToxic( const LLUUID& uuid );
+	bool		isAssetToxic( const LLUUID& uuid );
 
 	// Clean the toxic asset list, remove old entries
-	void		flushOldToxicAssets( BOOL force_it );
+	void		flushOldToxicAssets( bool force_it );
 
 	// Add an item to the toxic asset map
 	void		markAssetToxic( const LLUUID& uuid );
@@ -352,7 +352,7 @@ public:
 
 	// deprecated file-based methods
     // Not overriden
-	void getAssetData(const LLUUID uuid, LLAssetType::EType type, void (*callback)(const char*, const LLUUID&, void *, S32, LLExtStat), void *user_data, BOOL is_priority = FALSE);
+	void getAssetData(const LLUUID uuid, LLAssetType::EType type, void (*callback)(const char*, const LLUUID&, void *, S32, LLExtStat), void *user_data, bool is_priority = false);
 
 	/*
 	 * TransactionID version
@@ -374,12 +374,12 @@ public:
 	// add extra methods to handle metadata
 
 protected:
-	void _cleanupRequests(BOOL all, S32 error);
-	void _callUploadCallbacks(const LLUUID &uuid, const LLAssetType::EType asset_type, BOOL success, LLExtStat ext_status);
+	void _cleanupRequests(bool all, S32 error);
+	void _callUploadCallbacks(const LLUUID &uuid, const LLAssetType::EType asset_type, bool success, LLExtStat ext_status);
 
 	virtual void _queueDataRequest(const LLUUID& uuid, LLAssetType::EType type, LLGetAssetCallback callback,
-								   void *user_data, BOOL duplicate,
-								   BOOL is_priority) = 0;
+								   void *user_data, bool duplicate,
+								   bool is_priority) = 0;
 
 private:
 	void _init(LLMessageSystem *msg,
diff --git a/indra/llmessage/llcachename.cpp b/indra/llmessage/llcachename.cpp
index a2e85cf6c2..59dd64336e 100644
--- a/indra/llmessage/llcachename.cpp
+++ b/indra/llmessage/llcachename.cpp
@@ -215,7 +215,7 @@ public:
 	Impl(LLMessageSystem* msg);
 	~Impl();
 
-	BOOL getName(const LLUUID& id, std::string& first, std::string& last);
+	bool getName(const LLUUID& id, std::string& first, std::string& last);
 
 	boost::signals2::connection addPending(const LLUUID& id, const LLCacheNameCallback& callback);
 	void addPending(const LLUUID& id, const LLHost& host);
@@ -402,13 +402,13 @@ void LLCacheName::exportFile(std::ostream& ostr)
 }
 
 
-BOOL LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::string& last)
+bool LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::string& last)
 {
 	if(id.isNull())
 	{
 		first = sCacheName["nobody"];
 		last.clear();
-		return TRUE;
+		return true;
 	}
 
 	LLCacheNameEntry* entry = get_ptr_in_map(mCache, id );
@@ -416,7 +416,7 @@ BOOL LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::strin
 	{
 		first = entry->mFirstName;
 		last =  entry->mLastName;
-		return TRUE;
+		return true;
 	}
 	else
 	{
@@ -426,7 +426,7 @@ BOOL LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::strin
 		{
 			mAskNameQueue.insert(id);
 		}	
-		return FALSE;
+		return false;
 	}
 
 }
@@ -440,22 +440,22 @@ void LLCacheName::localizeCacheName(std::string key, std::string value)
 		LL_WARNS()<< " Error localizing cache key " << key << " To "<< value<<LL_ENDL;
 }
 
-BOOL LLCacheName::getFullName(const LLUUID& id, std::string& fullname)
+bool LLCacheName::getFullName(const LLUUID& id, std::string& fullname)
 {
 	std::string first_name, last_name;
-	BOOL res = impl.getName(id, first_name, last_name);
+	bool res = impl.getName(id, first_name, last_name);
 	fullname = buildFullName(first_name, last_name);
 	return res;
 }
 
 
 
-BOOL LLCacheName::getGroupName(const LLUUID& id, std::string& group)
+bool LLCacheName::getGroupName(const LLUUID& id, std::string& group)
 {
 	if(id.isNull())
 	{
 		group = sCacheName["none"];
-		return TRUE;
+		return true;
 	}
 
 	LLCacheNameEntry* entry = get_ptr_in_map(impl.mCache,id);
@@ -471,7 +471,7 @@ BOOL LLCacheName::getGroupName(const LLUUID& id, std::string& group)
 	if (entry)
 	{
 		group = entry->mGroupName;
-		return TRUE;
+		return true;
 	}
 	else 
 	{
@@ -480,27 +480,27 @@ BOOL LLCacheName::getGroupName(const LLUUID& id, std::string& group)
 		{
 			impl.mAskGroupQueue.insert(id);
 		}
-		return FALSE;
+		return false;
 	}
 }
 
-BOOL LLCacheName::getUUID(const std::string& first, const std::string& last, LLUUID& id)
+bool LLCacheName::getUUID(const std::string& first, const std::string& last, LLUUID& id)
 {
 	std::string full_name = buildFullName(first, last);
 	return getUUID(full_name, id);
 }
 
-BOOL LLCacheName::getUUID(const std::string& full_name, LLUUID& id)
+bool LLCacheName::getUUID(const std::string& full_name, LLUUID& id)
 {
 	ReverseCache::iterator iter = impl.mReverseCache.find(full_name);
 	if (iter != impl.mReverseCache.end())
 	{
 		id = iter->second;
-		return TRUE;
+		return true;
 	}
 	else
 	{
-		return FALSE;
+		return false;
 	}
 }
 
diff --git a/indra/llmessage/llcachename.h b/indra/llmessage/llcachename.h
index d238c3a247..d4c18d4d4c 100644
--- a/indra/llmessage/llcachename.h
+++ b/indra/llmessage/llcachename.h
@@ -71,11 +71,11 @@ public:
 	// If available, copies name ("bobsmith123" or "James Linden") into string
 	// If not available, copies the string "waiting".
 	// Returns TRUE iff available.
-	BOOL getFullName(const LLUUID& id, std::string& full_name);
+	bool getFullName(const LLUUID& id, std::string& full_name);
 
 	// Reverse lookup of UUID from name
-	BOOL getUUID(const std::string& first, const std::string& last, LLUUID& id);
-	BOOL getUUID(const std::string& fullname, LLUUID& id);
+	bool getUUID(const std::string& first, const std::string& last, LLUUID& id);
+	bool getUUID(const std::string& fullname, LLUUID& id);
 
 	// IDEVO Temporary code
 	// Clean up new-style "bobsmith123 Resident" names to "bobsmith123" for display
@@ -100,7 +100,7 @@ public:
 	// provided. The caller must allocate at least
 	// DB_GROUP_NAME_BUF_SIZE characters. If not available, this
 	// method copies the string "waiting". Returns TRUE iff available.
-	BOOL getGroupName(const LLUUID& id, std::string& group);
+	bool getGroupName(const LLUUID& id, std::string& group);
 
 	// Call the callback with the group or avatar name.
 	// If the data is currently available, may call the callback immediatly
diff --git a/indra/llmessage/llcircuit.cpp b/indra/llmessage/llcircuit.cpp
index a9a292958f..bb667201a0 100644
--- a/indra/llmessage/llcircuit.cpp
+++ b/indra/llmessage/llcircuit.cpp
@@ -282,7 +282,7 @@ S32 LLCircuitData::resendUnackedPackets(const F64Seconds now)
 	//
 
 	reliable_iter iter;
-	BOOL have_resend_overflow = FALSE;
+	bool have_resend_overflow = false;
 	for (iter = mUnackedPackets.begin(); iter != mUnackedPackets.end();)
 	{
 		packetp = iter->second;
@@ -488,7 +488,7 @@ void LLCircuit::removeCircuitData(const LLHost &host)
 	mLastCircuit = NULL;
 }
 
-void LLCircuitData::setAlive(BOOL b_alive)
+void LLCircuitData::setAlive(bool b_alive)
 {
 	if (mbAlive != b_alive)
 	{
@@ -500,12 +500,12 @@ void LLCircuitData::setAlive(BOOL b_alive)
 	{
 		mLastPingReceivedTime = LLMessageSystem::getMessageTimeSeconds();
 		mPingsInTransit = 0;
-		mBlocked = FALSE;
+		mBlocked = false;
 	}
 }
 
 
-void LLCircuitData::setAllowTimeout(BOOL allow)
+void LLCircuitData::setAllowTimeout(bool allow)
 {
 	mbAllowTimeout = allow;
 
@@ -513,7 +513,7 @@ void LLCircuitData::setAllowTimeout(BOOL allow)
 	{
 		// resuming circuit
 		// make sure it's alive
-		setAlive(TRUE);
+		setAlive(true);
 	}
 }
 
@@ -599,7 +599,7 @@ void LLCircuit::resendUnackedPackets(S32& unacked_list_length, S32& unacked_list
 }
 
 
-BOOL LLCircuitData::isDuplicateResend(TPACKETID packetnum)
+bool LLCircuitData::isDuplicateResend(TPACKETID packetnum)
 {
 	return (mRecentlyReceivedReliablePackets.find(packetnum) != mRecentlyReceivedReliablePackets.end());
 }
@@ -632,7 +632,7 @@ LLCircuitData* LLCircuit::findCircuit(const LLHost& host) const
 }
 
 
-BOOL LLCircuit::isCircuitAlive(const LLHost& host) const
+bool LLCircuit::isCircuitAlive(const LLHost& host) const
 {
 	LLCircuitData *cdp = findCircuit(host);
 	if(cdp)
@@ -640,7 +640,7 @@ BOOL LLCircuit::isCircuitAlive(const LLHost& host) const
 		return cdp->mbAlive;
 	}
 
-	return FALSE;
+	return false;
 }
 
 void LLCircuitData::setTimeoutCallback(void (*callback_func)(const LLHost &host, void *user_data), void *user_data)
@@ -649,7 +649,7 @@ void LLCircuitData::setTimeoutCallback(void (*callback_func)(const LLHost &host,
 	mTimeoutUserData = user_data; 
 }
 
-void LLCircuitData::checkPacketInID(TPACKETID id, BOOL receive_resent)
+void LLCircuitData::checkPacketInID(TPACKETID id, bool receive_resent)
 {
 	// Done as floats so we don't have to worry about running out of room
 	// with U32 getting poked into an S32.
@@ -844,7 +844,7 @@ void LLCircuit::updateWatchDogTimers(LLMessageSystem *msgsys)
 }
 
 
-BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
+bool LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 {
 	F64Seconds cur_time = LLMessageSystem::getMessageTimeSeconds();
 	mLastPingSendTime = cur_time;
@@ -852,7 +852,7 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 	if (!checkCircuitTimeout())
 	{
 		// Pass this back to the calling LLCircuit, this circuit needs to be cleaned up.
-		return FALSE;
+		return false;
 	}
 
 	// WARNING!
@@ -866,7 +866,7 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 	// This is to handle the case if we actually manage to wrap our
 	// packet IDs - the oldest will actually have a higher packet ID
 	// than the current.
-	BOOL wrapped = FALSE;
+	bool wrapped = false;
 	reliable_iter iter;
 	iter = mUnackedPackets.upper_bound(getPacketOutID());
 	if (iter == mUnackedPackets.end())
@@ -874,19 +874,19 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 		// Nothing AFTER this one, so we want the lowest packet ID
 		// then.
 		iter = mUnackedPackets.begin();
-		wrapped = TRUE;
+		wrapped = true;
 	}
 
 	TPACKETID packet_id = 0;
 
 	// Check against the "final" packets
-	BOOL wrapped_final = FALSE;
+	bool wrapped_final = false;
 	reliable_iter iter_final;
 	iter_final = mFinalRetryPackets.upper_bound(getPacketOutID());
 	if (iter_final == mFinalRetryPackets.end())
 	{
 		iter_final = mFinalRetryPackets.begin();
-		wrapped_final = TRUE;
+		wrapped_final = true;
 	}
 
 	//LL_INFOS() << mHost << " - unacked count " << mUnackedPackets.size() << LL_ENDL;
@@ -922,12 +922,12 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 		}
 		else
 		{
-			BOOL had_unacked = FALSE;
+			bool had_unacked = false;
 			if (iter != mUnackedPackets.end())
 			{
 				// Unacked list has the lowest so far
 				packet_id = iter->first;
-				had_unacked = TRUE;
+				had_unacked = true;
 				//LL_INFOS() << mHost << ": Unacked" << LL_ENDL;
 			}
 
@@ -989,7 +989,7 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 		}
 	}
 
-	return TRUE;
+	return true;
 }
 
 
@@ -1041,7 +1041,7 @@ void LLCircuitData::clearDuplicateList(TPACKETID oldest_id)
 	//LL_INFOS() << "Recent list after: " << mRecentlyReceivedReliablePackets.size() << LL_ENDL;
 }
 
-BOOL LLCircuitData::checkCircuitTimeout()
+bool LLCircuitData::checkCircuitTimeout()
 {
 	F64Seconds time_since_last_ping = LLMessageSystem::getMessageTimeSeconds() - mLastPingReceivedTime;
 
@@ -1049,7 +1049,7 @@ BOOL LLCircuitData::checkCircuitTimeout()
 	if (time_since_last_ping > mHeartbeatTimeout)
 	{
 		LL_WARNS() << "LLCircuitData::checkCircuitTimeout for " << mHost << " last ping " << time_since_last_ping << " seconds ago." <<LL_ENDL;
-		setAlive(FALSE);
+		setAlive(false);
 		if (mTimeoutCallback)
 		{
 			LL_WARNS() << "LLCircuitData::checkCircuitTimeout for " << mHost << " calling callback." << LL_ENDL;
@@ -1059,16 +1059,16 @@ BOOL LLCircuitData::checkCircuitTimeout()
 		{
 			// The callback didn't try and resurrect the circuit.  We should kill it.
 			LL_WARNS() << "LLCircuitData::checkCircuitTimeout for " << mHost << " still dead, dropping." << LL_ENDL;
-			return FALSE;
+			return false;
 		}
 	}
 
-	return TRUE;
+	return true;
 }
 
 // Call this method when a reliable message comes in - this will
 // correctly place the packet in the correct list to be acked later.
-BOOL LLCircuitData::collectRAck(TPACKETID packet_num)
+bool LLCircuitData::collectRAck(TPACKETID packet_num)
 {
 	if (mAcks.empty())
 	{
@@ -1081,7 +1081,7 @@ BOOL LLCircuitData::collectRAck(TPACKETID packet_num)
 	{
 		mAckCreationTime = getAgeInSeconds();
 	}
-	return TRUE;
+	return true;
 }
 
 // this method is called during the message system processAcks() to
@@ -1303,7 +1303,7 @@ void LLCircuitData::pingTimerStart()
 
 	if (!mBlocked && (mPingsInTransit > PING_START_BLOCK))
 	{
-		mBlocked = TRUE;
+		mBlocked = true;
 	}
 }
 
@@ -1344,19 +1344,19 @@ U32 LLCircuitData::getPacketsLost() const
 }
 
 
-BOOL LLCircuitData::isAlive() const
+bool LLCircuitData::isAlive() const
 {
 	return mbAlive;
 }
 
 
-BOOL LLCircuitData::isBlocked() const
+bool LLCircuitData::isBlocked() const
 {
 	return mBlocked;
 }
 
 
-BOOL LLCircuitData::getAllowTimeout() const
+bool LLCircuitData::getAllowTimeout() const
 {
 	return mbAllowTimeout;
 }
@@ -1402,13 +1402,13 @@ F32Milliseconds LLCircuitData::getPingDelayAveraged()
 }
 
 
-BOOL LLCircuitData::getTrusted() const
+bool LLCircuitData::getTrusted() const
 {
 	return mTrusted;
 }
 
 
-void LLCircuitData::setTrusted(BOOL t)
+void LLCircuitData::setTrusted(bool t)
 {
 	mTrusted = t;
 }
diff --git a/indra/llmessage/llcircuit.h b/indra/llmessage/llcircuit.h
index b8021bc9f0..95e470b543 100644
--- a/indra/llmessage/llcircuit.h
+++ b/indra/llmessage/llcircuit.h
@@ -100,7 +100,7 @@ public:
 	void setRemoteID(const LLUUID& id) { mRemoteID = id; }
 	void setRemoteSessionID(const LLUUID& id) { mRemoteSessionID = id; }
 
-	void		setTrusted(BOOL t);
+	void		setTrusted(bool t);
 
 	// The local end point ID is used when establishing a trusted circuit.
 	// no matching set function for getLocalEndPointID()
@@ -111,9 +111,9 @@ public:
 	S32				getPingsInTransit() const			{ return mPingsInTransit; }
 
 	// ACCESSORS
-	BOOL		isAlive() const;
-	BOOL		isBlocked() const;
-	BOOL		getAllowTimeout() const;
+	bool		isAlive() const;
+	bool		isBlocked() const;
+	bool		getAllowTimeout() const;
 	F32Milliseconds	getPingDelayAveraged();
 	F32Milliseconds	getPingInTransitTime();
 	U32			getPacketsIn() const;
@@ -122,7 +122,7 @@ public:
 	U32			getPacketsOut() const;
 	U32			getPacketsLost() const;
 	TPACKETID	getPacketOutID() const;
-	BOOL		getTrusted() const;
+	bool		getTrusted() const;
 	F32			getAgeInSeconds() const;
 	S32			getUnackedPacketCount() const	{ return mUnackedPacketCount; }
 	S32			getUnackedPacketBytes() const	{ return mUnackedPacketBytes; }
@@ -164,31 +164,31 @@ public:
 protected:
 	TPACKETID		nextPacketOutID();
 	void				setPacketInID(TPACKETID id);
-	void					checkPacketInID(TPACKETID id, BOOL receive_resent);
+	void					checkPacketInID(TPACKETID id, bool receive_resent);
 	void			setPingDelay(U32Milliseconds ping);
-	BOOL			checkCircuitTimeout();	// Return FALSE if the circuit is dead and should be cleaned up
+	bool			checkCircuitTimeout();	// Return false if the circuit is dead and should be cleaned up
 
 	void			addBytesIn(S32Bytes bytes);
 	void			addBytesOut(S32Bytes bytes);
 
 	U8				nextPingID()			{ mLastPingID++; return mLastPingID; }
 
-	BOOL			updateWatchDogTimers(LLMessageSystem *msgsys);	// Return FALSE if the circuit is dead and should be cleaned up
+	bool			updateWatchDogTimers(LLMessageSystem *msgsys);	// Return false if the circuit is dead and should be cleaned up
 
 	void			addReliablePacket(S32 mSocket, U8 *buf_ptr, S32 buf_len, LLReliablePacketParams *params);
-	BOOL			isDuplicateResend(TPACKETID packetnum);
+	bool			isDuplicateResend(TPACKETID packetnum);
 	// Call this method when a reliable message comes in - this will
 	// correctly place the packet in the correct list to be acked
 	// later. RAack = requested ack
-	BOOL collectRAck(TPACKETID packet_num);
+	bool collectRAck(TPACKETID packet_num);
 
 
 	void			setTimeoutCallback(void (*callback_func)(const LLHost &host, void *user_data), void *user_data);
 
 
 
-	void			setAlive(BOOL b_alive);
-	void			setAllowTimeout(BOOL allow);
+	void			setAlive(bool b_alive);
+	void			setAllowTimeout(bool allow);
 
 protected:
 	// Identification for this circuit.
@@ -212,12 +212,12 @@ protected:
 	void	(*mTimeoutCallback)(const LLHost &host, void *user_data);
 	void	*mTimeoutUserData;
 
-	BOOL	mTrusted;					// Is this circuit trusted?
-	BOOL	mbAllowTimeout;				// Machines can "pause" circuits, forcing them not to be dropped
+	bool	mTrusted;					// Is this circuit trusted?
+	bool	mbAllowTimeout;				// Machines can "pause" circuits, forcing them not to be dropped
 
-	BOOL	mbAlive;					// Indicates whether a circuit is "alive", i.e. responded to pings
+	bool	mbAlive;					// Indicates whether a circuit is "alive", i.e. responded to pings
 
-	BOOL	mBlocked;					// Blocked is true if the circuit is hosed, i.e. far behind on pings
+	bool	mBlocked;					// Blocked is true if the circuit is hosed, i.e. far behind on pings
 
 	// Not sure what the difference between this and mLastPingSendTime is
 	F64Seconds	mPingTime;					// Time at which a ping was sent.
@@ -293,7 +293,7 @@ public:
 
 	// ACCESSORS
 	LLCircuitData* findCircuit(const LLHost& host) const;
-	BOOL isCircuitAlive(const LLHost& host) const;
+	bool isCircuitAlive(const LLHost& host) const;
 	
 	// MANIPULATORS
 	LLCircuitData	*addCircuitData(const LLHost &host, TPACKETID in_id);
diff --git a/indra/llmessage/llclassifiedflags.cpp b/indra/llmessage/llclassifiedflags.cpp
index f6084d4a60..bf8c9171a7 100644
--- a/indra/llmessage/llclassifiedflags.cpp
+++ b/indra/llmessage/llclassifiedflags.cpp
@@ -36,7 +36,7 @@
 
 #include "llclassifiedflags.h"
 
-ClassifiedFlags pack_classified_flags_request(BOOL auto_renew, BOOL inc_pg, BOOL inc_mature, BOOL inc_adult)
+ClassifiedFlags pack_classified_flags_request(bool auto_renew, bool inc_pg, bool inc_mature, bool inc_adult)
 {
 	U8 rv = 0;
 	if(inc_pg) rv |= CLASSIFIED_QUERY_INC_PG;
@@ -47,7 +47,7 @@ ClassifiedFlags pack_classified_flags_request(BOOL auto_renew, BOOL inc_pg, BOOL
 	return rv;
 }
 
-ClassifiedFlags pack_classified_flags(BOOL auto_renew, BOOL inc_pg, BOOL inc_mature, BOOL inc_adult)
+ClassifiedFlags pack_classified_flags(bool auto_renew, bool inc_pg, bool inc_mature, bool inc_adult)
 {
 	U8 rv = 0;
 	if(inc_pg) rv |= CLASSIFIED_QUERY_INC_PG;
diff --git a/indra/llmessage/llclassifiedflags.h b/indra/llmessage/llclassifiedflags.h
index 17fc867453..0365ea8f09 100644
--- a/indra/llmessage/llclassifiedflags.h
+++ b/indra/llmessage/llclassifiedflags.h
@@ -51,7 +51,7 @@ const S32 MAX_CLASSIFIEDS = 100;
 // This function is used in AO viewers to pack old query flags into the request 
 // so that they can talk to old dataservers properly. When the AO servers are deployed on agni
 // we can revert back to ClassifiedFlags pack_classified_flags and get rider of this one.
-ClassifiedFlags pack_classified_flags_request(BOOL auto_renew, BOOL is_pg, BOOL is_mature, BOOL is_adult);
+ClassifiedFlags pack_classified_flags_request(bool auto_renew, bool is_pg, bool is_mature, bool is_adult);
 
 ClassifiedFlags pack_classified_flags(BOOL auto_renew, BOOL is_pg, BOOL is_mature, BOOL is_adult);
 bool is_cf_mature(ClassifiedFlags flags);
diff --git a/indra/llmessage/llhost.cpp b/indra/llmessage/llhost.cpp
index ae5c2ecf69..30e4109729 100644
--- a/indra/llmessage/llhost.cpp
+++ b/indra/llmessage/llhost.cpp
@@ -103,7 +103,7 @@ std::string LLHost::getHostName() const
 	}
 }
 
-BOOL LLHost::setHostByName(const std::string& hostname)
+bool LLHost::setHostByName(const std::string& hostname)
 {
 	hostent *he;
 	std::string local_name(hostname);
@@ -123,7 +123,7 @@ BOOL LLHost::setHostByName(const std::string& hostname)
 	if (he)
 	{
 		mIP = *(U32 *)he->h_addr_list[0];
-		return TRUE;
+		return true;
 	}
 	else 
 	{
@@ -147,7 +147,7 @@ BOOL LLHost::setHostByName(const std::string& hostname)
 				LL_WARNS() << "LLHost::setAddress(): unknown error - " << error_number << LL_ENDL;
 				break;
 		}
-		return FALSE;
+		return false;
 	}
 }
 
diff --git a/indra/llmessage/llhost.h b/indra/llmessage/llhost.h
index 79cad4b123..dd12e381d4 100644
--- a/indra/llmessage/llhost.h
+++ b/indra/llmessage/llhost.h
@@ -80,7 +80,7 @@ public:
 	void	setAddress( const std::string& ipstr )		{ mIP = ip_string_to_u32(ipstr.c_str()); }
 	void	setAddress( U32 ip )				{ mIP = ip; }
 	void	setPort( U32 port )					{ mPort = port; }
-	BOOL    setHostByName(const std::string& hname);
+	bool    setHostByName(const std::string& hname);
 
 	LLHost&	operator=(const LLHost &rhs);
 	void    invalidate()                        { mIP = INVALID_HOST_IP_ADDRESS; mPort = INVALID_PORT;};
diff --git a/indra/llmessage/llinstantmessage.cpp b/indra/llmessage/llinstantmessage.cpp
index dd5a655d7e..52102e55c8 100644
--- a/indra/llmessage/llinstantmessage.cpp
+++ b/indra/llmessage/llinstantmessage.cpp
@@ -54,7 +54,7 @@ const S32 IM_TTL = 1;
 void pack_instant_message(
 	LLMessageSystem* msg,
 	const LLUUID& from_id,
-	BOOL from_group,
+	bool from_group,
 	const LLUUID& session_id,
 	const LLUUID& to_id,
 	const std::string& name,
@@ -93,7 +93,7 @@ void pack_instant_message(
 void pack_instant_message_block(
 	LLMessageSystem* msg,
 	const LLUUID& from_id,
-	BOOL from_group,
+	bool from_group,
 	const LLUUID& session_id,
 	const LLUUID& to_id,
 	const std::string& name,
diff --git a/indra/llmessage/llinstantmessage.h b/indra/llmessage/llinstantmessage.h
index 55cda15405..383fe2591a 100644
--- a/indra/llmessage/llinstantmessage.h
+++ b/indra/llmessage/llinstantmessage.h
@@ -180,7 +180,7 @@ extern const S32 IM_TTL;
 void pack_instant_message(
 	LLMessageSystem* msgsystem,
 	const LLUUID& from_id,
-	BOOL from_group,
+	bool from_group,
 	const LLUUID& session_id,
 	const LLUUID& to_id,
 	const std::string& name,
@@ -198,7 +198,7 @@ void pack_instant_message(
 void pack_instant_message_block(
 	LLMessageSystem* msgsystem,
 	const LLUUID& from_id,
-	BOOL from_group,
+	bool from_group,
 	const LLUUID& session_id,
 	const LLUUID& to_id,
 	const std::string& name,
diff --git a/indra/llmessage/llmail.cpp b/indra/llmessage/llmail.cpp
index fcda2a85f6..b22cd8cccd 100644
--- a/indra/llmessage/llmail.cpp
+++ b/indra/llmessage/llmail.cpp
@@ -102,7 +102,7 @@ void disconnect_smtp()
 // Returns TRUE on success.
 // message should NOT be SMTP escaped.
 // static
-BOOL LLMail::send(
+bool LLMail::send(
 	const char* from_name,
 	const char* from_address,
 	const char* to_name,
@@ -120,7 +120,7 @@ BOOL LLMail::send(
 		headers);
 	if(header.empty())
 	{
-		return FALSE;
+		return false;
 	}
 
 	std::string message_str;
@@ -129,8 +129,8 @@ BOOL LLMail::send(
 		message_str = message;
 	}
 	bool rv = send(header, message_str, to_address, from_address);
-	if(rv) return TRUE;
-	return FALSE;
+	if(rv) return true;
+	return false;
 }
 
 // static
diff --git a/indra/llmessage/llmail.h b/indra/llmessage/llmail.h
index 3791714363..f97a443c47 100644
--- a/indra/llmessage/llmail.h
+++ b/indra/llmessage/llmail.h
@@ -48,7 +48,7 @@ public:
 	 * @param to_address The email recipient address
 	 * @param subject The subject of the email
 	 * @param headers optional X-Foo headers in an llsd map. 
-	 * @return Returns TRUE if the call succeeds, FALSE otherwise.
+	 * @return Returns true if the call succeeds, false otherwise.
 	 *
 	 * Results in:
 	 * From: "from_name" <from_address>
@@ -57,7 +57,7 @@ public:
 	 * 
 	 * message
 	 */
-	static BOOL send(
+	static bool send(
 		const char* from_name,
 		const char* from_address,
 		const char* to_name,
diff --git a/indra/llmessage/llmessagebuilder.h b/indra/llmessage/llmessagebuilder.h
index bf5be929f2..75bd5f5cc7 100644
--- a/indra/llmessage/llmessagebuilder.h
+++ b/indra/llmessage/llmessagebuilder.h
@@ -49,14 +49,14 @@ public:
 	virtual void newMessage(const char* name) = 0;
 
 	virtual void nextBlock(const char* blockname) = 0;
-	virtual BOOL removeLastBlock() = 0; // TODO: babbage: remove this horror
+	virtual bool removeLastBlock() = 0; // TODO: babbage: remove this horror
 
 	/** All add* methods expect pointers to canonical strings. */
 	virtual void addBinaryData(
 		const char* varname,
 		const void* data, 
 		S32 size) = 0;
-	virtual void addBOOL(const char* varname, BOOL b) = 0;
+	virtual void addBOOL(const char* varname, bool b) = 0;
 	virtual void addS8(const char* varname, S8 s) = 0;
 	virtual void addU8(const char* varname, U8 u) = 0;
 	virtual void addS16(const char* varname, S16 i) = 0;
@@ -76,12 +76,12 @@ public:
 	virtual void addString(const char* varname, const char* s) = 0;
 	virtual void addString(const char* varname, const std::string& s) = 0;
 
-	virtual BOOL isMessageFull(const char* blockname) const = 0;
+	virtual bool isMessageFull(const char* blockname) const = 0;
 	virtual void compressMessage(U8*& buf_ptr, U32& buffer_length) = 0;
 	virtual S32 getMessageSize() = 0;
 
-	virtual BOOL isBuilt() const = 0;
-	virtual BOOL isClear() const = 0;
+	virtual bool isBuilt() const = 0;
+	virtual bool isClear() const = 0;
 	virtual U32 buildMessage(
 		U8* buffer,
 		U32 buffer_size,
@@ -90,7 +90,7 @@ public:
 	virtual void clearMessage() = 0;
 
 	// TODO: babbage: remove this horror
-	virtual void setBuilt(BOOL b) = 0;
+	virtual void setBuilt(bool b) = 0;
 
 	virtual const char* getMessageName() const = 0;
 
diff --git a/indra/llmessage/llmessagereader.cpp b/indra/llmessage/llmessagereader.cpp
index 1d1bee7f59..4a6f5145b3 100644
--- a/indra/llmessage/llmessagereader.cpp
+++ b/indra/llmessage/llmessagereader.cpp
@@ -27,7 +27,7 @@
 #include "linden_common.h"
 #include "llmessagereader.h"
 
-static BOOL sTimeDecodes = FALSE;
+static bool sTimeDecodes = false;
 
 static F32 sTimeDecodesSpamThreshold = 0.05f;
 
@@ -38,7 +38,7 @@ LLMessageReader::~LLMessageReader()
 }
 
 //static 
-void LLMessageReader::setTimeDecodes(BOOL b)
+void LLMessageReader::setTimeDecodes(bool b)
 {
 	sTimeDecodes = b;
 }
@@ -49,8 +49,8 @@ void LLMessageReader::setTimeDecodesSpamThreshold(F32 seconds)
 	sTimeDecodesSpamThreshold = seconds;
 }
 
-//static 
-BOOL LLMessageReader::getTimeDecodes()
+//static
+bool LLMessageReader::getTimeDecodes()
 {
 	return sTimeDecodes;
 }
diff --git a/indra/llmessage/llmessagereader.h b/indra/llmessage/llmessagereader.h
index 647f267785..2f64371f63 100644
--- a/indra/llmessage/llmessagereader.h
+++ b/indra/llmessage/llmessagereader.h
@@ -84,8 +84,9 @@ class LLMessageReader
 
 	virtual void copyToBuilder(LLMessageBuilder&) const = 0;
 
-	static void setTimeDecodes(BOOL b);
-	static BOOL getTimeDecodes();
+    
+	static void setTimeDecodes(bool b);
+	static bool getTimeDecodes();
 	static void setTimeDecodesSpamThreshold(F32 seconds);
 	static F32 getTimeDecodesSpamThreshold();
 };
diff --git a/indra/llmessage/llmessagetemplateparser.cpp b/indra/llmessage/llmessagetemplateparser.cpp
index 1f7c09dbe5..3e81fed49e 100644
--- a/indra/llmessage/llmessagetemplateparser.cpp
+++ b/indra/llmessage/llmessagetemplateparser.cpp
@@ -42,7 +42,7 @@
 //  *	- repeat last check
 
 // checks 'a'
-BOOL	b_return_alphanumeric_ok(char c)
+bool	b_return_alphanumeric_ok(char c)
 {
 	if (  (  (c < 'A')
 		   ||(c > 'Z'))
@@ -51,26 +51,26 @@ BOOL	b_return_alphanumeric_ok(char c)
 		&&(  (c < '0')
 		   ||(c > '9')))
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // checks 'c'
-BOOL	b_return_character_ok(char c)
+bool	b_return_character_ok(char c)
 {
 	if (  (  (c < 'A')
 		   ||(c > 'Z'))
 		&&(  (c < 'a')
 		   ||(c > 'z')))
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // checks 'f'
-BOOL	b_return_first_variable_ok(char c)
+bool	b_return_first_variable_ok(char c)
 {
 	if (  (  (c < 'A')
 		   ||(c > 'Z'))
@@ -78,13 +78,13 @@ BOOL	b_return_first_variable_ok(char c)
 		   ||(c > 'z'))
 		&&(c != '_'))
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // checks 'v'
-BOOL	b_return_variable_ok(char c)
+bool	b_return_variable_ok(char c)
 {
 	if (  (  (c < 'A')
 		   ||(c > 'Z'))
@@ -94,35 +94,35 @@ BOOL	b_return_variable_ok(char c)
 		   ||(c > '9'))
 		&&(c != '_'))
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // checks 's'
-BOOL	b_return_signed_integer_ok(char c)
+bool	b_return_signed_integer_ok(char c)
 {
 	if (  (  (c < '0')
 		   ||(c > '9'))
 		&&(c != '-'))
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // checks 'd'
-BOOL	b_return_integer_ok(char c)
+bool	b_return_integer_ok(char c)
 {
 	if (  (c < '0')
 		||(c > '9'))
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
-BOOL	(*gParseCheckCharacters[])(char c) =
+bool	(*gParseCheckCharacters[])(char c) =
 {
 	b_return_alphanumeric_ok,
 	b_return_character_ok,
@@ -156,7 +156,7 @@ S32 get_checker_number(char checker)
 }
 
 // check token based on passed simplified regular expression
-BOOL	b_check_token(const char *token, const char *regexp)
+bool	b_check_token(const char *token, const char *regexp)
 {
 	S32 tptr, rptr = 0;
 	S32 current_checker, next_checker = 0;
@@ -166,13 +166,13 @@ BOOL	b_check_token(const char *token, const char *regexp)
 	if (current_checker == -1)
 	{
 		LL_ERRS() << "Invalid regular expression value!" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 
 	if (current_checker == 9999)
 	{
 		LL_ERRS() << "Regular expression can't start with *!" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 
 	for (tptr = 0; token[tptr]; tptr++)
@@ -196,40 +196,40 @@ BOOL	b_check_token(const char *token, const char *regexp)
 			}
 		}
 	}
-	return TRUE;
+	return true;
 }
 
 // C variable can be made up of upper or lower case letters, underscores, or numbers, but can't start with a number
-BOOL	b_variable_ok(const char *token)
+bool	b_variable_ok(const char *token)
 {
 	if (!b_check_token(token, "fv*"))
 	{
 		LL_WARNS() << "Token '" << token << "' isn't a variable!" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // An integer is made up of the digits 0-9 and may be preceded by a '-'
-BOOL	b_integer_ok(const char *token)
+bool	b_integer_ok(const char *token)
 {
 	if (!b_check_token(token, "sd*"))
 	{
 		LL_WARNS() << "Token isn't an integer!" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 // An integer is made up of the digits 0-9
-BOOL	b_positive_integer_ok(const char *token)
+bool	b_positive_integer_ok(const char *token)
 {
 	if (!b_check_token(token, "d*"))
 	{
 		LL_WARNS() << "Token isn't an integer!" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 
diff --git a/indra/llmessage/llmessagethrottle.cpp b/indra/llmessage/llmessagethrottle.cpp
index 14582aaf32..bddb9e14d6 100644
--- a/indra/llmessage/llmessagethrottle.cpp
+++ b/indra/llmessage/llmessagethrottle.cpp
@@ -66,13 +66,13 @@ void LLMessageThrottle::pruneEntries()
 
 		// Look for the first entry younger than the maximum age.
 		F32 max_age = (F32)MAX_MESSAGE_AGE[cat]; 
-		BOOL found = FALSE;
+		bool found = false;
 		while (r_iterator != r_last && !found)
 		{
 			if ( LLFrameTimer::getTotalTime() - (*r_iterator).getEntryTime() < max_age )
 			{
 				// We found a young enough entry.
-				found = TRUE;
+				found = true;
 
 				// Did we find at least one entry to remove?
 				if (r_iterator != message_list->rbegin())
@@ -95,7 +95,7 @@ void LLMessageThrottle::pruneEntries()
 	}
 }
 
-BOOL LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg)
+bool LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg)
 {
 	message_list_t* message_list = &(mMessageList[MTC_VIEWER_ALERT]);
 
@@ -114,16 +114,16 @@ BOOL LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg
 	{
 		// This message was not found.  Add it to the list.
 		message_list->push_front(entry);
-		return TRUE;
+		return true;
 	}
 	else
 	{
 		// This message was already in the list.
-		return FALSE;
+		return false;
 	}
 }
 
-BOOL LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, const std::string& mesg)
+bool LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, const std::string& mesg)
 {
 	message_list_t* message_list = &(mMessageList[MTC_AGENT_ALERT]);
 
@@ -142,12 +142,12 @@ BOOL LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, c
 	{
 		// This message was not found.  Add it to the list.
 		message_list->push_front(entry);
-		return TRUE;
+		return true;
 	}
 	else
 	{
 		// This message was already in the list.
-		return FALSE;
+		return false;
 	}
 }
 
diff --git a/indra/llmessage/llmessagethrottle.h b/indra/llmessage/llmessagethrottle.h
index 4ea84f712a..ae62b43920 100644
--- a/indra/llmessage/llmessagethrottle.h
+++ b/indra/llmessage/llmessagethrottle.h
@@ -59,8 +59,8 @@ public:
 	LLMessageThrottle();
 	~LLMessageThrottle();
 
-	BOOL addViewerAlert	(const LLUUID& to, const std::string& mesg);
-	BOOL addAgentAlert	(const LLUUID& agent, const LLUUID& task, const std::string& mesg);
+	bool addViewerAlert	(const LLUUID& to, const std::string& mesg);
+	bool addAgentAlert	(const LLUUID& agent, const LLUUID& task, const std::string& mesg);
 
 	void pruneEntries();
 
diff --git a/indra/llmessage/llnamevalue.cpp b/indra/llmessage/llnamevalue.cpp
index c51883ee3d..761e990c76 100644
--- a/indra/llmessage/llnamevalue.cpp
+++ b/indra/llmessage/llnamevalue.cpp
@@ -676,13 +676,13 @@ LLVector3	*LLNameValue::getVec3()
 }
 
 
-BOOL LLNameValue::sendToData() const
+bool LLNameValue::sendToData() const
 {
 	return (mSendto == NVS_DATA_SIM || mSendto == NVS_DATA_SIM_VIEWER);
 }
 
 
-BOOL LLNameValue::sendToViewer() const
+bool LLNameValue::sendToViewer() const
 {
 	return (mSendto == NVS_SIM_VIEWER || mSendto == NVS_DATA_SIM_VIEWER);
 }
diff --git a/indra/llmessage/llnamevalue.h b/indra/llmessage/llnamevalue.h
index f8b556b5fe..92b20284ef 100644
--- a/indra/llmessage/llnamevalue.h
+++ b/indra/llmessage/llnamevalue.h
@@ -139,8 +139,8 @@ public:
 	const char		*getClass() const		{ return mStringClass; }
 	const char		*getSendto() const		{ return mStringSendto; }
 
-	BOOL			sendToData() const;
-	BOOL			sendToViewer() const;
+	bool			sendToData() const;
+	bool			sendToViewer() const;
 
 	void			callCallback();
 	std::string		printNameValue() const;
diff --git a/indra/llmessage/llpacketack.cpp b/indra/llmessage/llpacketack.cpp
index c3c022c297..8e04934286 100644
--- a/indra/llmessage/llpacketack.cpp
+++ b/indra/llmessage/llpacketack.cpp
@@ -58,7 +58,7 @@ LLReliablePacket::LLReliablePacket(
 	else
 	{
 		mRetries = 0;
-		mPingBasedRetry = TRUE;
+		mPingBasedRetry = true;
 		mTimeout = F32Seconds(0.f);
 		mCallback = NULL;
 		mCallbackData = NULL;
diff --git a/indra/llmessage/llpacketring.cpp b/indra/llmessage/llpacketring.cpp
index 687212ea10..7ba76bea25 100644
--- a/indra/llmessage/llpacketring.cpp
+++ b/indra/llmessage/llpacketring.cpp
@@ -97,12 +97,12 @@ void LLPacketRing::setDropPercentage (F32 percent_to_drop)
 	mDropPercentage = percent_to_drop;
 }
 
-void LLPacketRing::setUseInThrottle(const BOOL use_throttle)
+void LLPacketRing::setUseInThrottle(const bool use_throttle)
 {
 	mUseInThrottle = use_throttle;
 }
 
-void LLPacketRing::setUseOutThrottle(const BOOL use_throttle)
+void LLPacketRing::setUseOutThrottle(const bool use_throttle)
 {
 	mUseOutThrottle = use_throttle;
 }
@@ -161,7 +161,7 @@ S32 LLPacketRing::receivePacket (S32 socket, char *datap)
 	// If using the throttle, simulate a limited size input buffer.
 	if (mUseInThrottle)
 	{
-		BOOL done = FALSE;
+		bool done = false;
 
 		// push any current net packet (if any) onto delay ring
 		while (!done)
@@ -270,9 +270,9 @@ S32 LLPacketRing::receivePacket (S32 socket, char *datap)
 	return packet_size;
 }
 
-BOOL LLPacketRing::sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host)
+bool LLPacketRing::sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host)
 {
-	BOOL status = TRUE;
+	bool status = true;
 	if (!mUseOutThrottle)
 	{
 		return sendPacketImpl(h_socket, send_buffer, buf_size, host );
@@ -344,7 +344,7 @@ BOOL LLPacketRing::sendPacket(int h_socket, char * send_buffer, S32 buf_size, LL
 	return status;
 }
 
-BOOL LLPacketRing::sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host)
+bool LLPacketRing::sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host)
 {
 	
 	if (!LLProxy::isSOCKSProxyEnabled())
diff --git a/indra/llmessage/llpacketring.h b/indra/llmessage/llpacketring.h
index b214271e78..888ee927b5 100644
--- a/indra/llmessage/llpacketring.h
+++ b/indra/llmessage/llpacketring.h
@@ -46,14 +46,14 @@ public:
 
 	void dropPackets(U32);	
 	void setDropPercentage (F32 percent_to_drop);
-	void setUseInThrottle(const BOOL use_throttle);
-	void setUseOutThrottle(const BOOL use_throttle);
+	void setUseInThrottle(const bool use_throttle);
+	void setUseOutThrottle(const bool use_throttle);
 	void setInBandwidth(const F32 bps);
 	void setOutBandwidth(const F32 bps);
 	S32  receivePacket (S32 socket, char *datap);
 	S32  receiveFromRing (S32 socket, char *datap);
 
-	BOOL sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host);
+	bool sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host);
 
 	inline LLHost getLastSender();
 	inline LLHost getLastReceivingInterface();
@@ -61,8 +61,8 @@ public:
 	S32 getAndResetActualInBits()				{ S32 bits = mActualBitsIn; mActualBitsIn = 0; return bits;}
 	S32 getAndResetActualOutBits()				{ S32 bits = mActualBitsOut; mActualBitsOut = 0; return bits;}
 protected:
-	BOOL mUseInThrottle;
-	BOOL mUseOutThrottle;
+	bool mUseInThrottle;
+	bool mUseOutThrottle;
 	
 	// For simulating a lower-bandwidth connection - BPS
 	LLThrottle mInThrottle;
@@ -84,7 +84,7 @@ protected:
 	LLHost mLastReceivingIF;
 
 private:
-	BOOL sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host);
+	bool sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host);
 };
 
 
diff --git a/indra/llmessage/llpartdata.cpp b/indra/llmessage/llpartdata.cpp
index 6664eb02dc..a4852cefba 100644
--- a/indra/llmessage/llpartdata.cpp
+++ b/indra/llmessage/llpartdata.cpp
@@ -71,31 +71,31 @@ S32 LLPartData::getSize() const
 }
 
 
-BOOL LLPartData::unpackLegacy(LLDataPacker &dp)
+bool LLPartData::unpackLegacy(LLDataPacker &dp)
 {
 	LLColor4U coloru;
 
 	dp.unpackU32(mFlags, "pdflags");
-	dp.unpackFixed(mMaxAge, "pdmaxage", FALSE, 8, 8);
+	dp.unpackFixed(mMaxAge, "pdmaxage", false, 8, 8);
 
 	dp.unpackColor4U(coloru, "pdstartcolor");
 	mStartColor.setVec(coloru);
 	dp.unpackColor4U(coloru, "pdendcolor");
 	mEndColor.setVec(coloru);
-	dp.unpackFixed(mStartScale.mV[0], "pdstartscalex", FALSE, 3, 5);
-	dp.unpackFixed(mStartScale.mV[1], "pdstartscaley", FALSE, 3, 5);
-	dp.unpackFixed(mEndScale.mV[0], "pdendscalex", FALSE, 3, 5);
-	dp.unpackFixed(mEndScale.mV[1], "pdendscaley", FALSE, 3, 5);
+	dp.unpackFixed(mStartScale.mV[0], "pdstartscalex", false, 3, 5);
+	dp.unpackFixed(mStartScale.mV[1], "pdstartscaley", false, 3, 5);
+	dp.unpackFixed(mEndScale.mV[0], "pdendscalex", false, 3, 5);
+	dp.unpackFixed(mEndScale.mV[1], "pdendscaley", false, 3, 5);
 
 	mStartGlow = 0.f;
 	mEndGlow = 0.f;
 	mBlendFuncSource = LLPartData::LL_PART_BF_SOURCE_ALPHA;
 	mBlendFuncDest = LLPartData::LL_PART_BF_ONE_MINUS_SOURCE_ALPHA;
 
-	return TRUE;
+	return true;
 }
 
-BOOL LLPartData::unpack(LLDataPacker &dp)
+bool LLPartData::unpack(LLDataPacker &dp)
 {
 	S32 size = 0;
 	dp.unpackS32(size, "partsize");
@@ -105,7 +105,7 @@ BOOL LLPartData::unpack(LLDataPacker &dp)
 
 	if (mFlags & LL_PART_DATA_GLOW)
 	{
-		if (size < PS_PART_DATA_GLOW_SIZE) return FALSE;
+		if (size < PS_PART_DATA_GLOW_SIZE) return false;
 
 		U8 tmp_glow = 0;
 		dp.unpackU8(tmp_glow,"pdstartglow");
@@ -123,7 +123,7 @@ BOOL LLPartData::unpack(LLDataPacker &dp)
 
 	if (mFlags & LL_PART_DATA_BLEND)
 	{
-		if (size < PS_PART_DATA_BLEND_SIZE) return FALSE;
+		if (size < PS_PART_DATA_BLEND_SIZE) return false;
 		dp.unpackU8(mBlendFuncSource,"pdblendsource");
 		dp.unpackU8(mBlendFuncDest,"pdblenddest");
 		size -= PS_PART_DATA_BLEND_SIZE;
@@ -144,11 +144,11 @@ BOOL LLPartData::unpack(LLDataPacker &dp)
 		}
 
 		//this particle system won't display properly, better to not show anything
-		return FALSE;
+		return false;
 	}
 
 
-	return TRUE;
+	return true;
 }
 
 void LLPartData::setFlags(const U32 flags)
@@ -240,44 +240,44 @@ LLPartSysData::LLPartSysData()
 	mNumParticles = 0;
 }
 
-BOOL LLPartSysData::unpackSystem(LLDataPacker &dp)
+bool LLPartSysData::unpackSystem(LLDataPacker &dp)
 {
 	dp.unpackU32(mCRC, "pscrc");
 	dp.unpackU32(mFlags, "psflags");
 	dp.unpackU8(mPattern, "pspattern");
-	dp.unpackFixed(mMaxAge, "psmaxage", FALSE, 8, 8);
-	dp.unpackFixed(mStartAge, "psstartage", FALSE, 8, 8);
-	dp.unpackFixed(mInnerAngle, "psinnerangle", FALSE, 3, 5);
-	dp.unpackFixed(mOuterAngle, "psouterangle", FALSE, 3, 5);
-	dp.unpackFixed(mBurstRate, "psburstrate", FALSE, 8, 8);
+	dp.unpackFixed(mMaxAge, "psmaxage", false, 8, 8);
+	dp.unpackFixed(mStartAge, "psstartage", false, 8, 8);
+	dp.unpackFixed(mInnerAngle, "psinnerangle", false, 3, 5);
+	dp.unpackFixed(mOuterAngle, "psouterangle", false, 3, 5);
+	dp.unpackFixed(mBurstRate, "psburstrate", false, 8, 8);
 	mBurstRate = llmax(0.01f, mBurstRate);
-	dp.unpackFixed(mBurstRadius, "psburstradius", FALSE, 8, 8);
-	dp.unpackFixed(mBurstSpeedMin, "psburstspeedmin", FALSE, 8, 8);
-	dp.unpackFixed(mBurstSpeedMax, "psburstspeedmax", FALSE, 8, 8);
+	dp.unpackFixed(mBurstRadius, "psburstradius", false, 8, 8);
+	dp.unpackFixed(mBurstSpeedMin, "psburstspeedmin", false, 8, 8);
+	dp.unpackFixed(mBurstSpeedMax, "psburstspeedmax", false, 8, 8);
 	dp.unpackU8(mBurstPartCount, "psburstpartcount");
 
-	dp.unpackFixed(mAngularVelocity.mV[0], "psangvelx", TRUE, 8, 7);
-	dp.unpackFixed(mAngularVelocity.mV[1], "psangvely", TRUE, 8, 7);
-	dp.unpackFixed(mAngularVelocity.mV[2], "psangvelz", TRUE, 8, 7);
+	dp.unpackFixed(mAngularVelocity.mV[0], "psangvelx", true, 8, 7);
+	dp.unpackFixed(mAngularVelocity.mV[1], "psangvely", true, 8, 7);
+	dp.unpackFixed(mAngularVelocity.mV[2], "psangvelz", true, 8, 7);
 
-	dp.unpackFixed(mPartAccel.mV[0], "psaccelx", TRUE, 8, 7);
-	dp.unpackFixed(mPartAccel.mV[1], "psaccely", TRUE, 8, 7);
-	dp.unpackFixed(mPartAccel.mV[2], "psaccelz", TRUE, 8, 7);
+	dp.unpackFixed(mPartAccel.mV[0], "psaccelx", true, 8, 7);
+	dp.unpackFixed(mPartAccel.mV[1], "psaccely", true, 8, 7);
+	dp.unpackFixed(mPartAccel.mV[2], "psaccelz", true, 8, 7);
 
 	dp.unpackUUID(mPartImageID, "psuuid");
 	dp.unpackUUID(mTargetUUID, "pstargetuuid");
-	return TRUE;
+	return true;
 }
 
-BOOL LLPartSysData::unpackLegacy(LLDataPacker &dp)
+bool LLPartSysData::unpackLegacy(LLDataPacker &dp)
 {
 	unpackSystem(dp);
 	mPartData.unpackLegacy(dp);
 
-	return TRUE;
+	return true;
 }
 
-BOOL LLPartSysData::unpack(LLDataPacker &dp)
+bool LLPartSysData::unpack(LLDataPacker &dp)
 {
 	// syssize is currently unused.  Adding now when modifying the 'version to make extensible in the future
 	S32 size = 0;
@@ -300,7 +300,7 @@ BOOL LLPartSysData::unpack(LLDataPacker &dp)
 		{
 			dp.unpackU8(feh, "whippang");
 		}
-		return FALSE;
+		return false;
 	}
 
 	unpackSystem(dp);
@@ -324,7 +324,7 @@ std::ostream& operator<<(std::ostream& s, const LLPartSysData &data)
 	return s;
 }
 
-BOOL LLPartSysData::isNullPS(const S32 block_num)
+bool LLPartSysData::isNullPS(const S32 block_num)
 {
 	U8 ps_data_block[PS_MAX_DATA_BLOCK_SIZE];
 	U32 crc;
@@ -335,13 +335,13 @@ BOOL LLPartSysData::isNullPS(const S32 block_num)
 	
 	if (!size)
 	{
-		return TRUE;
+		return true;
 	}
 	
 	if (size > PS_MAX_DATA_BLOCK_SIZE)
 	{
 		//size is too big, newer particle version unsupported
-		return TRUE;
+		return true;
 	}
 
 	gMessageSystem->getBinaryData("ObjectData", "PSBlock", ps_data_block, size, block_num, PS_MAX_DATA_BLOCK_SIZE);
@@ -355,7 +355,7 @@ BOOL LLPartSysData::isNullPS(const S32 block_num)
 
 		if (tmp > PS_SYS_DATA_BLOCK_SIZE)
 		{ //unknown system data block size, don't know how to parse it, treat as NULL
-			return TRUE;
+			return true;
 		}
 	}
 
@@ -363,12 +363,12 @@ BOOL LLPartSysData::isNullPS(const S32 block_num)
 
 	if (crc == 0)
 	{
-		return TRUE;
+		return true;
 	}
-	return FALSE;
+	return false;
 }
 
-BOOL LLPartSysData::unpackBlock(const S32 block_num)
+bool LLPartSysData::unpackBlock(const S32 block_num)
 {
 	U8 ps_data_block[PS_MAX_DATA_BLOCK_SIZE];
 
@@ -378,7 +378,7 @@ BOOL LLPartSysData::unpackBlock(const S32 block_num)
 	if (size > PS_MAX_DATA_BLOCK_SIZE)
 	{
 		// Larger packets are newer and unsupported
-		return FALSE;
+		return false;
 	}
 
 	// Get from message
diff --git a/indra/llmessage/llpartdata.h b/indra/llmessage/llpartdata.h
index ed5c1a6ac7..c61e411a23 100644
--- a/indra/llmessage/llpartdata.h
+++ b/indra/llmessage/llpartdata.h
@@ -88,10 +88,10 @@ public:
 		mParameter(0.f)
 	{
 	}
-	BOOL unpackLegacy(LLDataPacker &dp);
-	BOOL unpack(LLDataPacker &dp);
+	bool unpackLegacy(LLDataPacker &dp);
+	bool unpack(LLDataPacker &dp);
 
-	BOOL pack(LLDataPacker &dp);
+	bool pack(LLDataPacker &dp);
 	
 	bool hasGlow() const;
 	bool hasBlendFunc() const;
@@ -183,11 +183,11 @@ class LLPartSysData
 public:
 	LLPartSysData();
 
-	BOOL unpack(LLDataPacker &dp);
-	BOOL unpackLegacy(LLDataPacker &dp);
-	BOOL unpackBlock(const S32 block_num);
+	bool unpack(LLDataPacker &dp);
+	bool unpackLegacy(LLDataPacker &dp);
+	bool unpackBlock(const S32 block_num);
 		
-	static BOOL isNullPS(const S32 block_num); // Returns FALSE if this is a "NULL" particle system (i.e. no system)
+	static bool isNullPS(const S32 block_num); // Returns false if this is a "NULL" particle system (i.e. no system)
 
 	bool isLegacyCompatible() const;
 
@@ -227,7 +227,7 @@ public:
 	S32 getdataBlockSize() const;
 	
 private:
-	BOOL unpackSystem(LLDataPacker &dp);
+	bool unpackSystem(LLDataPacker &dp);
 
 public:
 	// Public because I'm lazy....
diff --git a/indra/llmessage/llsdmessagebuilder.cpp b/indra/llmessage/llsdmessagebuilder.cpp
index 49456c71ed..7ea0c55afd 100644
--- a/indra/llmessage/llsdmessagebuilder.cpp
+++ b/indra/llmessage/llsdmessagebuilder.cpp
@@ -68,8 +68,8 @@ void LLSDMessageBuilder::newMessage(const char* name)
 // virtual
 void LLSDMessageBuilder::clearMessage()
 {
-	mbSBuilt = FALSE;
-	mbSClear = TRUE;
+	mbSBuilt = false;
+	mbSClear = true;
 
 	mCurrentMessage = LLSD::emptyMap();
 	mCurrentMessageName = "";
@@ -96,10 +96,10 @@ void LLSDMessageBuilder::nextBlock(const char* blockname)
 }
 
 // TODO: Remove this horror...
-BOOL LLSDMessageBuilder::removeLastBlock()
+bool LLSDMessageBuilder::removeLastBlock()
 {
 	/* TODO: finish implementing this */
-	return FALSE;
+	return false;
 }
 
 void LLSDMessageBuilder::addBinaryData(
@@ -168,9 +168,9 @@ void LLSDMessageBuilder::addIPPort(const char* varname, U16 v)
 	(*mCurrentBlock)[varname] = v;
 }
 
-void LLSDMessageBuilder::addBOOL(const char* varname, BOOL v)
+void LLSDMessageBuilder::addBOOL(const char* varname, bool v)
 {
-	(*mCurrentBlock)[varname] = (v == TRUE);
+	(*mCurrentBlock)[varname] = (v == true);
 }
 
 void LLSDMessageBuilder::addString(const char* varname, const char* v)
@@ -218,9 +218,9 @@ void LLSDMessageBuilder::compressMessage(U8*& buf_ptr, U32& buffer_length)
 {
 }
 
-BOOL LLSDMessageBuilder::isMessageFull(const char* blockname) const
+bool LLSDMessageBuilder::isMessageFull(const char* blockname) const
 {
-	return FALSE;
+	return false;
 }
 
 U32 LLSDMessageBuilder::buildMessage(U8*, U32, U8)
@@ -400,13 +400,13 @@ const LLSD& LLSDMessageBuilder::getMessage() const
 }
 
 //virtual
-void LLSDMessageBuilder::setBuilt(BOOL b) { mbSBuilt = b; }
+void LLSDMessageBuilder::setBuilt(bool b) { mbSBuilt = b; }
 
 //virtual 
-BOOL LLSDMessageBuilder::isBuilt() const {return mbSBuilt;}
+bool LLSDMessageBuilder::isBuilt() const {return mbSBuilt;}
 
 //virtual 
-BOOL LLSDMessageBuilder::isClear() const {return mbSClear;}
+bool LLSDMessageBuilder::isClear() const {return mbSClear;}
 
 //virtual 
 S32 LLSDMessageBuilder::getMessageSize()
diff --git a/indra/llmessage/llsdmessagebuilder.h b/indra/llmessage/llsdmessagebuilder.h
index 9c7c1bfde3..f1e824f5d4 100644
--- a/indra/llmessage/llsdmessagebuilder.h
+++ b/indra/llmessage/llsdmessagebuilder.h
@@ -48,14 +48,14 @@ public:
 	virtual void newMessage(const char* name);
 
 	virtual void nextBlock(const char* blockname);
-	virtual BOOL removeLastBlock(); // TODO: babbage: remove this horror...
+	virtual bool removeLastBlock(); // TODO: babbage: remove this horror...
 
 	/** All add* methods expect pointers to canonical varname strings. */
 	virtual void addBinaryData(
 		const char* varname,
 		const void* data, 
 		S32 size);
-	virtual void addBOOL(const char* varname, BOOL b);
+	virtual void addBOOL(const char* varname, bool b);
 	virtual void addS8(const char* varname, S8 s);
 	virtual void addU8(const char* varname, U8 u);
 	virtual void addS16(const char* varname, S16 i);
@@ -75,18 +75,18 @@ public:
 	virtual void addString(const char* varname, const char* s);
 	virtual void addString(const char* varname, const std::string& s);
 
-	virtual BOOL isMessageFull(const char* blockname) const;
+	virtual bool isMessageFull(const char* blockname) const;
 	virtual void compressMessage(U8*& buf_ptr, U32& buffer_length);
 
-	virtual BOOL isBuilt() const;
-	virtual BOOL isClear() const;
+	virtual bool isBuilt() const;
+	virtual bool isClear() const;
 	virtual U32 buildMessage(U8* buffer, U32 buffer_size, U8 offset_to_data);
         /**< Null implementation which returns 0. */
 	
 	virtual void clearMessage();
 
 	// TODO: babbage: remove this horror.
-	virtual void setBuilt(BOOL b);
+	virtual void setBuilt(bool b);
 
 	virtual S32 getMessageSize();
 	virtual const char* getMessageName() const;
diff --git a/indra/llmessage/lltemplatemessagebuilder.cpp b/indra/llmessage/lltemplatemessagebuilder.cpp
index 5ac5f6c580..fad94ecab6 100644
--- a/indra/llmessage/lltemplatemessagebuilder.cpp
+++ b/indra/llmessage/lltemplatemessagebuilder.cpp
@@ -220,7 +220,7 @@ void LLTemplateMessageBuilder::nextBlock(const char* blockname)
 }
 
 // TODO: Remove this horror...
-BOOL LLTemplateMessageBuilder::removeLastBlock()
+bool LLTemplateMessageBuilder::removeLastBlock()
 {
 	if (mCurrentSBlockName)
 	{
@@ -268,18 +268,18 @@ BOOL LLTemplateMessageBuilder::removeLastBlock()
 							<< ". Block: " << block_name
 							<< ". Number: " << num_blocks
 							<< LL_ENDL;
-					return FALSE;
+					return false;
 				}
 				else
 				{
 					// Decrement the counter.
 					block_data->mBlockNumber--;
-					return TRUE;
+					return true;
 				}
 			}
 		}
 	}
-	return FALSE;
+	return false;
 }
 
 // add data to variable in current block
@@ -445,7 +445,7 @@ void LLTemplateMessageBuilder::addIPPort(const char *varname, U16 u)
 	addData(varname, &u, MVT_IP_PORT, sizeof(u));
 }
 
-void LLTemplateMessageBuilder::addBOOL(const char* varname, BOOL b)
+void LLTemplateMessageBuilder::addBOOL(const char* varname, bool b)
 {
 	// Can't just cast a BOOL (actually a U32) to a U8.
 	// In some cases the low order bits will be zero.
@@ -584,15 +584,15 @@ void LLTemplateMessageBuilder::compressMessage(U8*& buf_ptr, U32& buffer_length)
 	}
 }
 
-BOOL LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
+bool LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
 {
 	if(mCurrentSendTotal > MTUBYTES)
 	{
-		return TRUE;
+		return true;
 	}
 	if(!blockname)
 	{
-		return FALSE;
+		return false;
 	}
 	char* bnamep = (char*)blockname;
 	S32 max;
@@ -614,9 +614,9 @@ BOOL LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
 	}
 	if(mCurrentSMessageData->mMemberBlocks[bnamep]->mBlockNumber >= max)
 	{
-		return TRUE;
+		return true;
 	}
-	return FALSE;
+	return false;
 }
 
 static S32 buildBlock(U8* buffer, S32 buffer_size, const LLMessageBlock* template_data, LLMsgData* message_data)
@@ -877,13 +877,13 @@ void LLTemplateMessageBuilder::copyFromLLSD(const LLSD&)
 }
 
 //virtual
-void LLTemplateMessageBuilder::setBuilt(BOOL b) { mbSBuilt = b; }
+void LLTemplateMessageBuilder::setBuilt(bool b) { mbSBuilt = b; }
 
 //virtual 
-BOOL LLTemplateMessageBuilder::isBuilt() const {return mbSBuilt;}
+bool LLTemplateMessageBuilder::isBuilt() const {return mbSBuilt;}
 
 //virtual 
-BOOL LLTemplateMessageBuilder::isClear() const {return mbSClear;}
+bool LLTemplateMessageBuilder::isClear() const {return mbSClear;}
 
 //virtual 
 S32 LLTemplateMessageBuilder::getMessageSize() {return mCurrentSendTotal;}
diff --git a/indra/llmessage/lltemplatemessagebuilder.h b/indra/llmessage/lltemplatemessagebuilder.h
index 4f614a4657..b8b4b36c3d 100644
--- a/indra/llmessage/lltemplatemessagebuilder.h
+++ b/indra/llmessage/lltemplatemessagebuilder.h
@@ -49,12 +49,12 @@ public:
 	virtual void newMessage(const char* name);
 
 	virtual void nextBlock(const char* blockname);
-	virtual BOOL removeLastBlock(); // TODO: babbage: remove this horror...
+	virtual bool removeLastBlock(); // TODO: babbage: remove this horror...
 
 	/** All add* methods expect pointers to canonical varname strings. */
 	virtual void addBinaryData(const char *varname, const void *data, 
 							   S32 size);
-	virtual void addBOOL(const char* varname, BOOL b);
+	virtual void addBOOL(const char* varname, bool b);
 	virtual void addS8(const char* varname, S8 s);
 	virtual void addU8(const char* varname, U8 u);
 	virtual void addS16(const char* varname, S16 i);
@@ -74,18 +74,18 @@ public:
 	virtual void addString(const char* varname, const char* s);
 	virtual void addString(const char* varname, const std::string& s);
 
-	virtual BOOL isMessageFull(const char* blockname) const;
+	virtual bool isMessageFull(const char* blockname) const;
 	virtual void compressMessage(U8*& buf_ptr, U32& buffer_length);
 
-	virtual BOOL isBuilt() const;
-	virtual BOOL isClear() const;
+	virtual bool isBuilt() const;
+	virtual bool isClear() const;
 	virtual U32 buildMessage(U8* buffer, U32 buffer_size, U8 offset_to_data);
         /**< Return built message size */
 	
 	virtual void clearMessage();
 
 	// TODO: babbage: remove this horror.
-	virtual void setBuilt(BOOL b);
+	virtual void setBuilt(bool b);
 
 	virtual S32 getMessageSize();
 	virtual const char* getMessageName() const;
diff --git a/indra/llmessage/lltemplatemessagereader.cpp b/indra/llmessage/lltemplatemessagereader.cpp
index 8a41d5565d..0ff49a2308 100644
--- a/indra/llmessage/lltemplatemessagereader.cpp
+++ b/indra/llmessage/lltemplatemessagereader.cpp
@@ -286,9 +286,9 @@ void LLTemplateMessageReader::getU8(const char *block, const char *var,
 void LLTemplateMessageReader::getBOOL(const char *block, const char *var, 
 										  bool &b, S32 blocknum )
 {
-	U8 value;
-	getData(block, var, &value, sizeof(U8), blocknum);
-	b = (BOOL) value;
+	bool value;
+	getData(block, var, &value, sizeof(bool), blocknum);
+	b = value;
 }
 
 void LLTemplateMessageReader::getS16(const char *block, const char *var, 
@@ -443,7 +443,7 @@ S32 LLTemplateMessageReader::getMessageSize() const
 }
 
 // Returns template for the message contained in buffer
-BOOL LLTemplateMessageReader::decodeTemplate(  
+bool LLTemplateMessageReader::decodeTemplate(
 		const U8* buffer, S32 buffer_size,  // inputs
 		LLMessageTemplate** msg_template ) // outputs
 {
@@ -453,7 +453,7 @@ BOOL LLTemplateMessageReader::decodeTemplate(
 	if (buffer_size <= 0)
 	{
 		LL_WARNS() << "No message waiting for decode!" << LL_ENDL;
-		return(FALSE);
+		return(false);
 	}
 
 	U32 num = 0;
@@ -489,7 +489,7 @@ BOOL LLTemplateMessageReader::decodeTemplate(
 	{
 		LL_WARNS() << "Packet with unusable length received (too short): "
 				<< buffer_size << LL_ENDL;
-		return(FALSE);
+		return(false);
 	}
 
 	LLMessageTemplate* temp = get_ptr_in_map(mMessageNumbers,num);
@@ -503,10 +503,10 @@ BOOL LLTemplateMessageReader::decodeTemplate(
 		LL_WARNS_ONCE() << "Message #" << std::hex << num << std::dec
                         << " received but not registered!" << LL_ENDL;
 		//gMessageSystem->callExceptionFunc(MX_UNREGISTERED_MESSAGE);
-		return(FALSE);
+		return(false);
 	}
 
-	return(TRUE);
+	return(true);
 }
 
 void LLTemplateMessageReader::logRanOffEndOfPacket( const LLHost& host, const S32 where, const S32 wanted )
@@ -531,7 +531,7 @@ void LLTemplateMessageReader::logRanOffEndOfPacket( const LLHost& host, const S3
 static LLTrace::BlockTimerStatHandle FTM_PROCESS_MESSAGES("Process Messages");
 
 // decode a given message
-BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender )
+bool LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender )
 {
     LL_RECORD_BLOCK_TIME(FTM_PROCESS_MESSAGES);
 
@@ -592,7 +592,7 @@ BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender
 		else
 		{
 			LL_ERRS() << "Unknown block type" << LL_ENDL;
-			return FALSE;
+			return false;
 		}
 
 		LLMsgBlkData* cur_data_block = NULL;
@@ -698,7 +698,7 @@ BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender
 		&& !mCurrentRMessageTemplate->mMemberBlocks.empty())
 	{
 		LL_DEBUGS() << "Empty message '" << mCurrentRMessageTemplate->mName << "' (no blocks)" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 
 	{
@@ -747,16 +747,16 @@ BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender
 			}
 		}
 	}
-	return TRUE;
+	return true;
 }
 
-BOOL LLTemplateMessageReader::validateMessage(const U8* buffer, 
-											  S32 buffer_size, 
+bool LLTemplateMessageReader::validateMessage(const U8* buffer,
+											  S32 buffer_size,
 											  const LLHost& sender,
 											  bool trusted)
 {
 	mReceiveSize = buffer_size;
-	BOOL valid = decodeTemplate(buffer, buffer_size, &mCurrentRMessageTemplate );
+	bool valid = decodeTemplate(buffer, buffer_size, &mCurrentRMessageTemplate );
 	if(valid)
 	{
 		mCurrentRMessageTemplate->mReceiveCount++;
@@ -773,7 +773,7 @@ BOOL LLTemplateMessageReader::validateMessage(const U8* buffer,
 			<< " from "
 			<< ((trusted) ? "trusted " : "untrusted ")
 			<< sender << LL_ENDL;
-		valid = FALSE;
+		valid = false;
 	}
 
 	if(valid && isUdpBanned())
@@ -781,12 +781,12 @@ BOOL LLTemplateMessageReader::validateMessage(const U8* buffer,
 		LL_WARNS() << "Received UDP black listed message "
 				<<  getMessageName()
 				<< " from " << sender << LL_ENDL;
-		valid = FALSE;
+		valid = false;
 	}
 	return valid;
 }
 
-BOOL LLTemplateMessageReader::readMessage(const U8* buffer, 
+bool LLTemplateMessageReader::readMessage(const U8* buffer,
 										  const LLHost& sender)
 {
 	return decodeData(buffer, sender);
diff --git a/indra/llmessage/lltemplatemessagereader.h b/indra/llmessage/lltemplatemessagereader.h
index 88889cd7d2..14656230e3 100644
--- a/indra/llmessage/lltemplatemessagereader.h
+++ b/indra/llmessage/lltemplatemessagereader.h
@@ -98,9 +98,9 @@ public:
 
 	virtual void copyToBuilder(LLMessageBuilder&) const;
 
-	BOOL validateMessage(const U8* buffer, S32 buffer_size, 
+	bool validateMessage(const U8* buffer, S32 buffer_size,
 						 const LLHost& sender, bool trusted = false);
-	BOOL readMessage(const U8* buffer, const LLHost& sender);
+	bool readMessage(const U8* buffer, const LLHost& sender);
 
 	bool isTrusted() const;
 	bool isBanned(bool trusted_source) const;
@@ -111,12 +111,12 @@ private:
 	void getData(const char *blockname, const char *varname, void *datap, 
 				 S32 size = 0, S32 blocknum = 0, S32 max_size = S32_MAX);
 
-	BOOL decodeTemplate(const U8* buffer, S32 buffer_size,  // inputs
+	bool decodeTemplate(const U8* buffer, S32 buffer_size,  // inputs
 						LLMessageTemplate** msg_template ); // outputs
 
 	void logRanOffEndOfPacket( const LLHost& host, const S32 where, const S32 wanted );
 
-	BOOL decodeData(const U8* buffer, const LLHost& sender );
+	bool decodeData(const U8* buffer, const LLHost& sender );
 
 	S32	mReceiveSize;
 	LLMessageTemplate* mCurrentRMessageTemplate;
diff --git a/indra/llmessage/llthrottle.cpp b/indra/llmessage/llthrottle.cpp
index e659414e8c..dc02b5ea90 100644
--- a/indra/llmessage/llthrottle.cpp
+++ b/indra/llmessage/llthrottle.cpp
@@ -57,9 +57,9 @@ F32 LLThrottle::getAvailable()
 	return mAvailable + (mRate * elapsed_time.value());
 }
 
-BOOL LLThrottle::checkOverflow(const F32 amount)
+bool LLThrottle::checkOverflow(const F32 amount)
 {
-	BOOL retval = TRUE;
+	bool retval = true;
 
 	F32 lookahead_amount = mRate * mLookaheadSecs;
 
@@ -72,17 +72,17 @@ BOOL LLThrottle::checkOverflow(const F32 amount)
 	{
 		// ...enough space to send this message
 		// Also do if > lookahead so we can use if amount > capped amount.
-		retval = FALSE;
+		retval = false;
 	}
 	
 	return retval;
 }
 
-BOOL LLThrottle::throttleOverflow(const F32 amount)
+bool LLThrottle::throttleOverflow(const F32 amount)
 {
 	F32Seconds elapsed_time;
 	F32 lookahead_amount;
-	BOOL retval = TRUE;
+	bool retval = true;
 
 	lookahead_amount = mRate * mLookaheadSecs;
 
@@ -97,12 +97,12 @@ BOOL LLThrottle::throttleOverflow(const F32 amount)
 		// ...channel completely open, so allow send regardless
 		// of size.  This allows sends on very low BPS channels.
 		mAvailable = lookahead_amount;
-		retval = FALSE;
+		retval = false;
 	}
 	else if (mAvailable > amount)
 	{
 		// ...enough space to send this message
-		retval = FALSE;
+		retval = false;
 	}
 
 	// We actually already sent the bits.
@@ -236,15 +236,15 @@ void LLThrottleGroup::resetDynamicAdjust()
 }
 
 
-BOOL LLThrottleGroup::setNominalBPS(F32* throttle_vec)
+bool LLThrottleGroup::setNominalBPS(F32* throttle_vec)
 {
-	BOOL changed = FALSE;
+	bool changed = false;
 	S32 i;
 	for (i = 0; i < TC_EOF; i++)
 	{
 		if (mNominalBPS[i] != throttle_vec[i])
 		{
-			changed = TRUE;
+			changed = true;
 			mNominalBPS[i] = throttle_vec[i];
 		}
 	}
@@ -285,9 +285,9 @@ S32		LLThrottleGroup::getAvailable(S32 throttle_cat)
 }
 
 
-BOOL LLThrottleGroup::checkOverflow(S32 throttle_cat, F32 bits)
+bool LLThrottleGroup::checkOverflow(S32 throttle_cat, F32 bits)
 {
-	BOOL retval = TRUE;
+	bool retval = true;
 
 	F32 category_bps = mCurrentBPS[throttle_cat];
 	F32 lookahead_bits = category_bps * THROTTLE_LOOKAHEAD_TIME;
@@ -302,23 +302,23 @@ BOOL LLThrottleGroup::checkOverflow(S32 throttle_cat, F32 bits)
 		// ...channel completely open, so allow send regardless
 		// of size.  This allows sends on very low BPS channels.
 		mBitsAvailable[throttle_cat] = lookahead_bits;
-		retval = FALSE;
+		retval = false;
 	}
 	else if ( bits_available > bits )
 	{
 		// ...enough space to send this message
-		retval = FALSE;
+		retval = false;
 	}
 	
 	return retval;
 }
 
-BOOL LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
+bool LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
 {
 	F32Seconds elapsed_time;
 	F32 category_bps;
 	F32 lookahead_bits;
-	BOOL retval = TRUE;
+	bool retval = true;
 
 	category_bps = mCurrentBPS[throttle_cat];
 	lookahead_bits = category_bps * THROTTLE_LOOKAHEAD_TIME;
@@ -333,12 +333,12 @@ BOOL LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
 		// ...channel completely open, so allow send regardless
 		// of size.  This allows sends on very low BPS channels.
 		mBitsAvailable[throttle_cat] = lookahead_bits;
-		retval = FALSE;
+		retval = false;
 	}
 	else if ( mBitsAvailable[throttle_cat] > bits )
 	{
 		// ...enough space to send this message
-		retval = FALSE;
+		retval = false;
 	}
 
 	// We actually already sent the bits.
@@ -354,7 +354,7 @@ BOOL LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
 }
 
 
-BOOL LLThrottleGroup::dynamicAdjust()
+bool LLThrottleGroup::dynamicAdjust()
 {
 	const F32Seconds DYNAMIC_ADJUST_TIME(1.0f);
 	const F32 CURRENT_PERIOD_WEIGHT = .25f;		// how much weight to give to last period while determining BPS utilization
@@ -370,7 +370,7 @@ BOOL LLThrottleGroup::dynamicAdjust()
 	// Only dynamically adjust every few seconds
 	if ((mt_sec - mDynamicAdjustTime) < DYNAMIC_ADJUST_TIME)
 	{
-		return FALSE;
+		return false;
 	}
 	mDynamicAdjustTime = mt_sec;
 
@@ -394,11 +394,11 @@ BOOL LLThrottleGroup::dynamicAdjust()
 
 	// Look for busy channels
 	// TODO: Fold into loop above.
-	BOOL channels_busy = FALSE;
+	bool channels_busy = false;
 	F32  busy_nominal_sum = 0;
-	BOOL channel_busy[TC_EOF];
-	BOOL channel_idle[TC_EOF];
-	BOOL channel_over_nominal[TC_EOF];
+	bool channel_busy[TC_EOF];
+	bool channel_idle[TC_EOF];
+	bool channel_over_nominal[TC_EOF];
 
 	for (i = 0; i < TC_EOF; i++)
 	{
@@ -406,34 +406,34 @@ BOOL LLThrottleGroup::dynamicAdjust()
 		if (mBitsSentHistory[i] >= BUSY_PERCENT * DYNAMIC_ADJUST_TIME.value() * mCurrentBPS[i])
 		{
 			// this channel is busy
-			channels_busy = TRUE;
+			channels_busy = true;
 			busy_nominal_sum += mNominalBPS[i];		// use for allocation of pooled idle bandwidth
-			channel_busy[i] = TRUE;
+			channel_busy[i] = true;
 		}
 		else
 		{
-			channel_busy[i] = FALSE;
+			channel_busy[i] = false;
 		}
 
 		// Is this an idle channel?
 		if ((mBitsSentHistory[i] < IDLE_PERCENT * DYNAMIC_ADJUST_TIME.value() * mCurrentBPS[i]) &&
 			(mBitsAvailable[i] > 0))
 		{
-			channel_idle[i] = TRUE;
+			channel_idle[i] = true;
 		}
 		else
 		{
-			channel_idle[i] = FALSE;
+			channel_idle[i] = false;
 		}
 
 		// Is this an overpumped channel?
 		if (mCurrentBPS[i] > mNominalBPS[i])
 		{
-			channel_over_nominal[i] = TRUE;
+			channel_over_nominal[i] = true;
 		}
 		else
 		{
-			channel_over_nominal[i] = FALSE;
+			channel_over_nominal[i] = false;
 		}
 	}
 
@@ -573,5 +573,5 @@ BOOL LLThrottleGroup::dynamicAdjust()
 			}
 		}
 	}
-	return TRUE;
+	return true;
 }
diff --git a/indra/llmessage/llthrottle.h b/indra/llmessage/llthrottle.h
index e43e54f61b..9b829e788a 100644
--- a/indra/llmessage/llthrottle.h
+++ b/indra/llmessage/llthrottle.h
@@ -41,8 +41,8 @@ public:
 	~LLThrottle() { }
 
 	void setRate(const F32 rate);
-	BOOL checkOverflow(const F32 amount); // I'm about to add an amount, TRUE if would overflow throttle
-	BOOL throttleOverflow(const F32 amount); // I just sent amount, TRUE if that overflowed the throttle
+	bool checkOverflow(const F32 amount); // I'm about to add an amount, TRUE if would overflow throttle
+	bool throttleOverflow(const F32 amount); // I just sent amount, TRUE if that overflowed the throttle
 
 	F32 getAvailable();	// Return the available bits
 	F32 getRate() const				{ return mRate; }
@@ -73,10 +73,10 @@ public:
 	~LLThrottleGroup() { }
 
 	void	resetDynamicAdjust();
-	BOOL	checkOverflow(S32 throttle_cat, F32 bits);		// I'm about to send bits, TRUE if would overflow channel
-	BOOL	throttleOverflow(S32 throttle_cat, F32 bits);	// I just sent bits, TRUE if that overflowed the channel
-	BOOL	dynamicAdjust();		// Shift bandwidth from idle channels to busy channels, TRUE if adjustment occurred
-	BOOL	setNominalBPS(F32* throttle_vec);				// TRUE if any value was different, resets adjustment system if was different
+	bool	checkOverflow(S32 throttle_cat, F32 bits);		// I'm about to send bits, TRUE if would overflow channel
+	bool	throttleOverflow(S32 throttle_cat, F32 bits);	// I just sent bits, TRUE if that overflowed the channel
+	bool	dynamicAdjust();		// Shift bandwidth from idle channels to busy channels, TRUE if adjustment occurred
+	bool	setNominalBPS(F32* throttle_vec);				// TRUE if any value was different, resets adjustment system if was different
 
 	S32		getAvailable(S32 throttle_cat);					// Return bits available in the channel
 
diff --git a/indra/llmessage/lltransfermanager.cpp b/indra/llmessage/lltransfermanager.cpp
index 452b77fb6d..fb901644c7 100644
--- a/indra/llmessage/lltransfermanager.cpp
+++ b/indra/llmessage/lltransfermanager.cpp
@@ -254,7 +254,7 @@ void LLTransferManager::processTransferRequest(LLMessageSystem *msgp, void **)
 	msgp->getBinaryData("TransferInfo", "Params", tmp, size);
 
 	LLDataPackerBinaryBuffer dpb(tmp, MAX_PARAMS_SIZE);
-	BOOL unpack_ok = tsp->unpackParams(dpb);
+	bool unpack_ok = tsp->unpackParams(dpb);
 	if (!unpack_ok)
 	{
 		// This should only happen if the data is corrupt or
@@ -505,7 +505,7 @@ void LLTransferManager::processTransferPacket(LLMessageSystem *msgp, void **)
 	// NOTE: THERE IS A CUT AND PASTE OF THIS CODE IN THE TRANSFERINFO HANDLER
 	// SO WE CAN PLAY BACK DELAYED PACKETS THERE!!!!!!!!!!!!!!!!!!!!!!!!!
 	//
-	BOOL done = FALSE;
+	bool done = false;
 	while (!done)
 	{
 		LLTSCode ret_code = ttp->dataCallback(packet_id, tmp_data, size);
@@ -780,7 +780,7 @@ void LLTransferSourceChannel::updateTransfers()
 
 	LLPriQueueMap<LLTransferSource *>::pqm_iter iter, next;
 
-	BOOL done = FALSE;
+	bool done = false;
 	for (iter = mTransferSources.mMap.begin(); (iter != mTransferSources.mMap.end()) && !done;)
 	{
 		//LL_INFOS() << "LLTransferSourceChannel::updateTransfers()" << LL_ENDL;
@@ -791,7 +791,7 @@ void LLTransferSourceChannel::updateTransfers()
 		LLTransferSource *tsp = iter->second;
 		U8 *datap = NULL;
 		S32 data_size = 0;
-		BOOL delete_data = FALSE;
+		bool delete_data = false;
 		S32 packet_id = 0;
 		S32 sent_bytes = 0;
 		LLTSCode status = LLTS_OK;
@@ -1335,7 +1335,7 @@ void LLTransferSourceParamsInvItem::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsInvItem::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsInvItem::unpackParams(LLDataPacker &dp)
 {
 	S32 tmp_at;
 
@@ -1349,7 +1349,7 @@ BOOL LLTransferSourceParamsInvItem::unpackParams(LLDataPacker &dp)
 
 	mAssetType = (LLAssetType::EType)tmp_at;
 
-	return TRUE;
+	return true;
 }
 
 LLTransferSourceParamsEstate::LLTransferSourceParamsEstate() :
@@ -1387,7 +1387,7 @@ void LLTransferSourceParamsEstate::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsEstate::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsEstate::unpackParams(LLDataPacker &dp)
 {
 	S32 tmp_et;
 
@@ -1397,5 +1397,5 @@ BOOL LLTransferSourceParamsEstate::unpackParams(LLDataPacker &dp)
 
 	mEstateAssetType = (EstateAssetType)tmp_et;
 
-	return TRUE;
+	return true;
 }
diff --git a/indra/llmessage/lltransfermanager.h b/indra/llmessage/lltransfermanager.h
index 6aad153c24..a756771445 100644
--- a/indra/llmessage/lltransfermanager.h
+++ b/indra/llmessage/lltransfermanager.h
@@ -263,7 +263,7 @@ public:
 	virtual ~LLTransferSourceParams();
 
 	virtual void packParams(LLDataPacker &dp) const	= 0;
-	virtual BOOL unpackParams(LLDataPacker &dp) = 0;
+	virtual bool unpackParams(LLDataPacker &dp) = 0;
 
 	LLTransferSourceType getType() const			{ return mType; }
 	
@@ -300,13 +300,13 @@ protected:
 										 const S32 max_bytes,
 										 U8 **datap,
 										 S32 &returned_bytes,
-										 BOOL &delete_returned) = 0;
+										 bool &delete_returned) = 0;
 
 	// The completionCallback is GUARANTEED to be called before the destructor.
 	virtual void			completionCallback(const LLTSCode status) = 0;
 
 	virtual void packParams(LLDataPacker& dp) const = 0;
-	virtual BOOL unpackParams(LLDataPacker& dp) = 0;
+	virtual bool unpackParams(LLDataPacker& dp) = 0;
 
 	virtual S32				getNextPacketID()						{ return mLastPacketID + 1; }
 	virtual void			setLastPacketID(const S32 packet_id)	{ mLastPacketID = packet_id; }
@@ -440,7 +440,7 @@ public:
 	LLTransferSourceParamsInvItem();
 	virtual ~LLTransferSourceParamsInvItem() {}
 	/*virtual*/ void packParams(LLDataPacker &dp) const;
-	/*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+	/*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 	void setAgentSession(const LLUUID &agent_id, const LLUUID &session_id);
 	void setInvItem(const LLUUID &owner_id, const LLUUID &task_id, const LLUUID &item_id);
@@ -472,7 +472,7 @@ public:
 	LLTransferSourceParamsEstate();
 	virtual ~LLTransferSourceParamsEstate() {}
 	/*virtual*/ void packParams(LLDataPacker &dp) const;
-	/*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+	/*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 	void setAgentSession(const LLUUID &agent_id, const LLUUID &session_id);
 	void setEstateAssetType(const EstateAssetType etype);
diff --git a/indra/llmessage/lltransfersourceasset.cpp b/indra/llmessage/lltransfersourceasset.cpp
index 027283232d..32fdc83f0e 100644
--- a/indra/llmessage/lltransfersourceasset.cpp
+++ b/indra/llmessage/lltransfersourceasset.cpp
@@ -62,7 +62,7 @@ void LLTransferSourceAsset::initTransfer()
 				mParams.getAssetType(),
 				LLTransferSourceAsset::responderCallback,
 				tidp,
-				FALSE);
+				false);
 		}
 		else
 		{
@@ -91,7 +91,7 @@ LLTSCode LLTransferSourceAsset::dataCallback(const S32 packet_id,
 											const S32 max_bytes,
 											U8 **data_handle,
 											S32 &returned_bytes,
-											BOOL &delete_returned)
+											bool &delete_returned)
 {
 	//LL_INFOS() << "LLTransferSourceAsset::dataCallback" << LL_ENDL;
 	if (!mGotResponse)
@@ -164,7 +164,7 @@ void LLTransferSourceAsset::packParams(LLDataPacker& dp) const
 	mParams.packParams(dp);
 }
 
-BOOL LLTransferSourceAsset::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceAsset::unpackParams(LLDataPacker &dp)
 {
 	//LL_INFOS() << "LLTransferSourceAsset::unpackParams" << LL_ENDL;
 	return mParams.unpackParams(dp);
@@ -240,7 +240,7 @@ void LLTransferSourceParamsAsset::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsAsset::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsAsset::unpackParams(LLDataPacker &dp)
 {
 	S32 tmp_at;
 
@@ -249,6 +249,6 @@ BOOL LLTransferSourceParamsAsset::unpackParams(LLDataPacker &dp)
 
 	mAssetType = (LLAssetType::EType)tmp_at;
 
-	return TRUE;
+	return true;
 }
 
diff --git a/indra/llmessage/lltransfersourceasset.h b/indra/llmessage/lltransfersourceasset.h
index 585e683cb3..f2a5dc214e 100644
--- a/indra/llmessage/lltransfersourceasset.h
+++ b/indra/llmessage/lltransfersourceasset.h
@@ -38,7 +38,7 @@ public:
 	LLTransferSourceParamsAsset();
 	virtual ~LLTransferSourceParamsAsset() {}
 	/*virtual*/ void packParams(LLDataPacker &dp) const;
-	/*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+	/*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 	void setAsset(const LLUUID &asset_id, const LLAssetType::EType asset_type);
 
@@ -65,15 +65,15 @@ protected:
 									  const S32 max_bytes,
 									  U8 **datap,
 									  S32 &returned_bytes,
-									  BOOL &delete_returned);
+									  bool &delete_returned);
 	/*virtual*/ void completionCallback(const LLTSCode status);
 
 	virtual void packParams(LLDataPacker& dp) const;
-	/*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+	/*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 protected:
 	LLTransferSourceParamsAsset mParams;
-	BOOL mGotResponse;
+	bool mGotResponse;
 
 	S32 mCurPos;
 };
diff --git a/indra/llmessage/lltransfersourcefile.cpp b/indra/llmessage/lltransfersourcefile.cpp
index 1f284a158d..1192a6e461 100644
--- a/indra/llmessage/lltransfersourcefile.cpp
+++ b/indra/llmessage/lltransfersourcefile.cpp
@@ -86,7 +86,7 @@ LLTSCode LLTransferSourceFile::dataCallback(const S32 packet_id,
 											const S32 max_bytes,
 											U8 **data_handle,
 											S32 &returned_bytes,
-											BOOL &delete_returned)
+											bool &delete_returned)
 {
 	//LL_INFOS() << "LLTransferSourceFile::dataCallback" << LL_ENDL;
 
@@ -141,7 +141,7 @@ void LLTransferSourceFile::packParams(LLDataPacker& dp) const
 	mParams.packParams(dp);
 }
 
-BOOL LLTransferSourceFile::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceFile::unpackParams(LLDataPacker &dp)
 {
 	//LL_INFOS() << "LLTransferSourceFile::unpackParams" << LL_ENDL;
 	return mParams.unpackParams(dp);
@@ -150,7 +150,7 @@ BOOL LLTransferSourceFile::unpackParams(LLDataPacker &dp)
 
 LLTransferSourceParamsFile::LLTransferSourceParamsFile() :
 	LLTransferSourceParams(LLTST_FILE),
-	mDeleteOnCompletion(FALSE)
+	mDeleteOnCompletion(false)
 {
 }
 
@@ -162,7 +162,7 @@ void LLTransferSourceParamsFile::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsFile::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsFile::unpackParams(LLDataPacker &dp)
 {
 	dp.unpackString(mFilename, "Filename");
 	U8 delete_flag;
@@ -170,5 +170,5 @@ BOOL LLTransferSourceParamsFile::unpackParams(LLDataPacker &dp)
 	mDeleteOnCompletion = delete_flag;
 
 	LL_INFOS() << "Unpacked filename: " << mFilename << LL_ENDL;
-	return TRUE;
+	return true;
 }
diff --git a/indra/llmessage/lltransfersourcefile.h b/indra/llmessage/lltransfersourcefile.h
index 985042417e..bda6bad14f 100644
--- a/indra/llmessage/lltransfersourcefile.h
+++ b/indra/llmessage/lltransfersourcefile.h
@@ -35,7 +35,7 @@ public:
 	LLTransferSourceParamsFile();
 	virtual ~LLTransferSourceParamsFile() {}
 	/*virtual*/ void packParams(LLDataPacker &dp) const;
-	/*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+	/*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 	void setFilename(const std::string &filename)		{ mFilename = filename; }
 	std::string getFilename() const					{ return mFilename; }
@@ -61,11 +61,11 @@ protected:
 									  const S32 max_bytes,
 									  U8 **datap,
 									  S32 &returned_bytes,
-									  BOOL &delete_returned);
+									  bool &delete_returned);
 	/*virtual*/ void completionCallback(const LLTSCode status);
 
 	virtual void packParams(LLDataPacker& dp) const;
-	/*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+	/*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 protected:
 	LLTransferSourceParamsFile mParams;
diff --git a/indra/llmessage/lluseroperation.cpp b/indra/llmessage/lluseroperation.cpp
index c506af19ce..d56997c7de 100644
--- a/indra/llmessage/lluseroperation.cpp
+++ b/indra/llmessage/lluseroperation.cpp
@@ -72,14 +72,14 @@ void LLUserOperation::SetNoExpireFlag(const BOOL flag)
 	mNoExpire = flag;
 }
 
-BOOL LLUserOperation::isExpired()
+bool LLUserOperation::isExpired()
 {
 	if (!mNoExpire)
 	{
 		const F32 EXPIRE_TIME_SECS = 10.f;
 		return mTimer.getElapsedTimeF32() > EXPIRE_TIME_SECS;
 	}
-	return FALSE;
+	return false;
 }
 
 void LLUserOperation::expire()
@@ -128,7 +128,7 @@ LLUserOperation* LLUserOperationMgr::findOperation(const LLUUID& tid)
 }
 
 
-BOOL LLUserOperationMgr::deleteOperation(LLUserOperation* op)
+bool LLUserOperationMgr::deleteOperation(LLUserOperation* op)
 {
 	size_t rv = 0;
 	if(op)
@@ -138,7 +138,7 @@ BOOL LLUserOperationMgr::deleteOperation(LLUserOperation* op)
 		delete op;
 		op = NULL;
 	}
-	return rv ? TRUE : FALSE;
+	return rv ? true : false;
 }
 
 void LLUserOperationMgr::deleteExpiredOperations()
diff --git a/indra/llmessage/lluseroperation.h b/indra/llmessage/lluseroperation.h
index 7db5f0b27f..88e5f82622 100644
--- a/indra/llmessage/lluseroperation.h
+++ b/indra/llmessage/lluseroperation.h
@@ -44,7 +44,7 @@ public:
 	const LLUUID& getAgentID() const { return mAgentID; }
 
 	// Operation never got necessary data, so expired	
-	virtual BOOL isExpired();
+	virtual bool isExpired();
 
 	// ability to mark this operation as never expiring.
 	void SetNoExpireFlag(const BOOL flag);
@@ -54,7 +54,7 @@ public:
 
 	// Run the operation. This will only be called in the case of an
 	// actual success or failure of the operation.
-	virtual BOOL execute(BOOL transaction_success) = 0;	
+	virtual bool execute(BOOL transaction_success) = 0;
 
 	// This method is called when the user op has expired, and is
 	// about to be deleted by the manager. This gives the user op the
@@ -68,7 +68,7 @@ protected:
 	LLUUID mAgentID;
 	LLUUID mTransactionID;
 	LLFrameTimer mTimer;
-	BOOL   mNoExpire;			// this is used for operations that expect an answer and will wait till it gets one. 
+	bool   mNoExpire;			// this is used for operations that expect an answer and will wait till it gets one.
 };
 
 
@@ -80,7 +80,7 @@ public:
 
 	void addOperation(LLUserOperation* op);
 	LLUserOperation* findOperation(const LLUUID& transaction_id);
-	BOOL deleteOperation(LLUserOperation* op);
+	bool deleteOperation(LLUserOperation* op);
 
 	// Call this method every once in a while to clean up old
 	// transactions.
diff --git a/indra/llmessage/llxfer.cpp b/indra/llmessage/llxfer.cpp
index 93d5cfc131..ad291df717 100644
--- a/indra/llmessage/llxfer.cpp
+++ b/indra/llmessage/llxfer.cpp
@@ -327,7 +327,7 @@ S32 LLXfer::processEOF()
 
 ///////////////////////////////////////////////////////////
 
-S32 LLXfer::encodePacketNum(S32 packet_num, BOOL is_EOF)
+S32 LLXfer::encodePacketNum(S32 packet_num, bool is_EOF)
 {
 	if (is_EOF)
 	{
diff --git a/indra/llmessage/llxfer.h b/indra/llmessage/llxfer.h
index a906674dec..cfd9f83d54 100644
--- a/indra/llmessage/llxfer.h
+++ b/indra/llmessage/llxfer.h
@@ -103,7 +103,7 @@ class LLXfer
 	virtual S32 suck(S32 start_position);
 	virtual S32 flush();
 	
-	virtual S32 encodePacketNum(S32 packet_num, BOOL is_eof);	
+	virtual S32 encodePacketNum(S32 packet_num, bool is_eof);
 	virtual void setXferSize (S32 data_size);
 	virtual S32  getMaxBufferSize();
 
diff --git a/indra/llmessage/llxfer_file.cpp b/indra/llmessage/llxfer_file.cpp
index 7fd4222fb7..f5e9071aa4 100644
--- a/indra/llmessage/llxfer_file.cpp
+++ b/indra/llmessage/llxfer_file.cpp
@@ -412,14 +412,14 @@ S32 LLXfer_File::processEOF()
 
 ///////////////////////////////////////////////////////////
 
-BOOL LLXfer_File::matchesLocalFilename(const std::string& filename) 
+bool LLXfer_File::matchesLocalFilename(const std::string& filename)
 {
 	return (filename == mLocalFilename);
 }
 
 ///////////////////////////////////////////////////////////
 
-BOOL LLXfer_File::matchesRemoteFilename(const std::string& filename, ELLPath remote_path) 
+bool LLXfer_File::matchesRemoteFilename(const std::string& filename, ELLPath remote_path)
 {
 	return ((filename == mRemoteFilename) && (remote_path == mRemotePath));
 }
diff --git a/indra/llmessage/llxfer_file.h b/indra/llmessage/llxfer_file.h
index ab9374549e..15a0120932 100644
--- a/indra/llmessage/llxfer_file.h
+++ b/indra/llmessage/llxfer_file.h
@@ -69,8 +69,8 @@ class LLXfer_File : public LLXfer
 	virtual S32 suck(S32 start_position);
 	virtual S32 flush();
 
-	virtual BOOL matchesLocalFilename(const std::string& filename);
-	virtual BOOL matchesRemoteFilename(const std::string& filename, ELLPath remote_path);
+	virtual bool matchesLocalFilename(const std::string& filename);
+	virtual bool matchesRemoteFilename(const std::string& filename, ELLPath remote_path);
 
 	virtual S32  getMaxBufferSize();
 
diff --git a/indra/llmessage/llxfer_vfile.cpp b/indra/llmessage/llxfer_vfile.cpp
index 12419b342d..f478825d97 100644
--- a/indra/llmessage/llxfer_vfile.cpp
+++ b/indra/llmessage/llxfer_vfile.cpp
@@ -367,14 +367,14 @@ S32 LLXfer_VFile::processEOF()
 
 ////////////////////////////////////////////////////////////
 
-BOOL LLXfer_VFile::matchesLocalFile(const LLUUID &id, LLAssetType::EType type)
+bool LLXfer_VFile::matchesLocalFile(const LLUUID &id, LLAssetType::EType type)
 {
 	return (id == mLocalID && type == mType);
 }
 
 //////////////////////////////////////////////////////////
 
-BOOL LLXfer_VFile::matchesRemoteFile(const LLUUID &id, LLAssetType::EType type)
+bool LLXfer_VFile::matchesRemoteFile(const LLUUID &id, LLAssetType::EType type)
 {
 	return (id == mRemoteID && type == mType);
 }
diff --git a/indra/llmessage/llxfer_vfile.h b/indra/llmessage/llxfer_vfile.h
index d82bab5f6c..71eaeb7393 100644
--- a/indra/llmessage/llxfer_vfile.h
+++ b/indra/llmessage/llxfer_vfile.h
@@ -72,8 +72,8 @@ class LLXfer_VFile : public LLXfer
 	virtual S32 suck(S32 start_position);
 	virtual S32 flush();
 
-	virtual BOOL matchesLocalFile(const LLUUID &id, LLAssetType::EType type);
-	virtual BOOL matchesRemoteFile(const LLUUID &id, LLAssetType::EType type);
+	virtual bool matchesLocalFile(const LLUUID &id, LLAssetType::EType type);
+	virtual bool matchesRemoteFile(const LLUUID &id, LLAssetType::EType type);
 
 	virtual void setXferSize(S32 xfer_size);
 	virtual S32  getMaxBufferSize();
diff --git a/indra/llmessage/llxfermanager.cpp b/indra/llmessage/llxfermanager.cpp
index 956ecc11a3..591dbc18c2 100644
--- a/indra/llmessage/llxfermanager.cpp
+++ b/indra/llmessage/llxfermanager.cpp
@@ -367,7 +367,7 @@ U64 LLXferManager::getNextID ()
 
 ///////////////////////////////////////////////////////////
 
-S32 LLXferManager::encodePacketNum(S32 packet_num, BOOL is_EOF)
+S32 LLXferManager::encodePacketNum(S32 packet_num, bool is_EOF)
 {
 	if (is_EOF)
 	{
@@ -385,7 +385,7 @@ S32 LLXferManager::decodePacketNum(S32 packet_num)
 
 ///////////////////////////////////////////////////////////
 
-BOOL LLXferManager::isLastPacket(S32 packet_num)
+bool LLXferManager::isLastPacket(S32 packet_num)
 {
 	return(packet_num & 0x80000000);
 }
@@ -396,11 +396,11 @@ U64 LLXferManager::requestFile(const std::string& local_filename,
 								const std::string& remote_filename,
 								ELLPath remote_path,
 								const LLHost& remote_host,
-								BOOL delete_remote_on_completion,
+								bool delete_remote_on_completion,
 								void (*callback)(void**,S32,LLExtStat),
 								void** user_data,
-								BOOL is_priority,
-								BOOL use_big_packets)
+								bool is_priority,
+								bool use_big_packets)
 {
 	LLXfer_File* file_xfer_p = NULL;
 
@@ -464,7 +464,7 @@ void LLXferManager::requestVFile(const LLUUID& local_id,
 								 const LLHost& remote_host,
 								 void (*callback)(void**,S32,LLExtStat),
 								 void** user_data,
-								 BOOL is_priority)
+								 bool is_priority)
 {
 	LLXfer_VFile * xfer_p = NULL;
 
@@ -1235,7 +1235,7 @@ void LLXferManager::startPendingDownloads()
 
 ///////////////////////////////////////////////////////////
 
-void LLXferManager::addToList(LLXfer* xferp, xfer_list_t & xfer_list, BOOL is_priority)
+void LLXferManager::addToList(LLXfer* xferp, xfer_list_t & xfer_list, bool is_priority)
 {
 	if(is_priority)
 	{
diff --git a/indra/llmessage/llxfermanager.h b/indra/llmessage/llxfermanager.h
index f49209bed0..17625aedfa 100644
--- a/indra/llmessage/llxfermanager.h
+++ b/indra/llmessage/llxfermanager.h
@@ -100,7 +100,7 @@ class LLXferManager
  protected:
 	// implementation methods
 	virtual void startPendingDownloads();
-	virtual void addToList(LLXfer* xferp, xfer_list_t & xfer_list, BOOL is_priority);
+	virtual void addToList(LLXfer* xferp, xfer_list_t & xfer_list, bool is_priority);
 	std::multiset<std::string> mExpectedTransfers; // files that are authorized to transfer out
 	std::multiset<std::string> mExpectedRequests;  // files that are authorized to be downloaded on top of
 	std::multiset<std::string> mExpectedVFileTransfers; // files that are authorized to transfer out
@@ -135,9 +135,9 @@ class LLXferManager
 // general utility routines
 	virtual void registerCallbacks(LLMessageSystem *mesgsys);
 	virtual U64 getNextID ();
-	virtual S32 encodePacketNum(S32 packet_num, BOOL is_eof);	
-	virtual S32 decodePacketNum(S32 packet_num);	
-	virtual BOOL isLastPacket(S32 packet_num);
+	virtual S32 encodePacketNum(S32 packet_num, bool is_eof);
+	virtual S32 decodePacketNum(S32 packet_num);
+	virtual bool isLastPacket(S32 packet_num);
 
 // file requesting routines
 // .. to file
@@ -145,19 +145,19 @@ class LLXferManager
 							 const std::string& remote_filename,
 							 ELLPath remote_path,
 							 const LLHost& remote_host,
- 							 BOOL delete_remote_on_completion,
+ 							 bool delete_remote_on_completion,
 							 void (*callback)(void**,S32,LLExtStat), void** user_data,
-							 BOOL is_priority = FALSE,
-							 BOOL use_big_packets = FALSE);
+							 bool is_priority = false,
+							 bool use_big_packets = false);
 	/*
 // .. to memory
 	virtual void requestFile(const std::string& remote_filename, 
 							 ELLPath remote_path,
 							 const LLHost &remote_host,
- 							 BOOL delete_remote_on_completion,
+ 							 bool delete_remote_on_completion,
 							 void (*callback)(void*, S32, void**, S32, LLExtStat),
 							 void** user_data,
-							 BOOL is_priority = FALSE);
+							 bool is_priority = false);
 	*/
 // vfile requesting
 // .. to vfile
@@ -165,7 +165,7 @@ class LLXferManager
 							  LLAssetType::EType type,
 							  const LLHost& remote_host,
 							  void (*callback)(void**,S32,LLExtStat), void** user_data,
-							  BOOL is_priority = FALSE);
+							  bool is_priority = false);
 	/**
 		When arbitrary files are requested to be transfered (by giving a dir of LL_PATH_NONE)
 	   they must be "expected", but having something pre-authorize them. This pair of functions
diff --git a/indra/llmessage/llxorcipher.cpp b/indra/llmessage/llxorcipher.cpp
index 9053e1b2f1..17651b1ecf 100644
--- a/indra/llmessage/llxorcipher.cpp
+++ b/indra/llmessage/llxorcipher.cpp
@@ -109,7 +109,7 @@ void LLXORCipher::init(const U8* pad, U32 pad_len)
 
 #ifdef _DEBUG
 // static
-BOOL LLXORCipher::testHarness()
+bool LLXORCipher::testHarness()
 {
 	const U32 PAD_LEN = 3;
 	const U8 PAD[] = "abc";
@@ -122,7 +122,7 @@ BOOL LLXORCipher::testHarness()
 	cipher.encrypt((U8*)MESSAGE, MSG_LENGTH, encrypted, MSG_LENGTH);
 	cipher.decrypt(encrypted, MSG_LENGTH, decrypted, MSG_LENGTH);
 
-	if(0 != memcmp((void*)MESSAGE, decrypted, MSG_LENGTH)) return FALSE;
-	return TRUE;
+	if(0 != memcmp((void*)MESSAGE, decrypted, MSG_LENGTH)) return false;
+	return true;
 }
 #endif
diff --git a/indra/llmessage/message.cpp b/indra/llmessage/message.cpp
index 5e24061959..d11efab7ab 100644
--- a/indra/llmessage/message.cpp
+++ b/indra/llmessage/message.cpp
@@ -362,7 +362,7 @@ void LLMessageSystem::clearReceiveState()
 }
 
 
-BOOL LLMessageSystem::poll(F32 seconds)
+bool LLMessageSystem::poll(F32 seconds)
 {
 	S32 num_socks;
 	apr_status_t status;
@@ -373,11 +373,11 @@ BOOL LLMessageSystem::poll(F32 seconds)
 	}
 	if (num_socks)
 	{
-		return TRUE;
+		return true;
 	}
 	else
 	{
-		return FALSE;
+		return false;
 	}
 }
 
@@ -468,7 +468,7 @@ LLCircuitData* LLMessageSystem::findCircuit(const LLHost& host,
 			else
 			{
 				// wake up the circuit
-				cdp->setAlive(TRUE);
+				cdp->setAlive(true);
 				
 				if(resetPacketId)
 				{
@@ -484,10 +484,10 @@ LLCircuitData* LLMessageSystem::findCircuit(const LLHost& host,
 // Returns TRUE if a valid, on-circuit message has been received.
 // Requiring a non-const LockMessageChecker reference ensures that
 // mMessageReader has been set to mTemplateMessageReader.
-BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
+bool LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 {
 	// Pump 
-	BOOL	valid_packet = FALSE;
+	bool	valid_packet = false;
 
 	LLTransferTargetVFile::updateQueue();
 	
@@ -506,8 +506,8 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 	{
 		clearReceiveState();
 		
-		BOOL recv_reliable = FALSE;
-		BOOL recv_resent = FALSE;
+		BOOL recv_reliable = false;
+		BOOL recv_resent = false;
 		S32 acks = 0;
 		S32 true_rcv_size = 0;
 
@@ -531,7 +531,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 				callExceptionFunc(MX_PACKET_TOO_SHORT);
 			}
 			// no data in packet receive buffer
-			valid_packet = FALSE;
+			valid_packet = false;
 		}
 		else
 		{
@@ -554,7 +554,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 					LL_WARNS("Messaging") << "Malformed packet received. Packet size "
 						<< receive_size << " with invalid no. of acks " << acks
 						<< LL_ENDL;
-					valid_packet = FALSE;
+					valid_packet = false;
 					continue;
 				}
 			}
@@ -593,11 +593,11 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 
 			if (buffer[0] & LL_RELIABLE_FLAG)
 			{
-				recv_reliable = TRUE;
+				recv_reliable = true;
 			}
 			if (buffer[0] & LL_RESENT_FLAG)
 			{
-				recv_resent = TRUE;
+				recv_resent = true;
 				if (cdp && cdp->isDuplicateResend(mCurrentRecvPacketID))
 				{
 					// We need to ACK here to suppress
@@ -635,7 +635,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 						LL_INFOS("Messaging") << str.str() << LL_ENDL;
 					}
 					mPacketsIn++;
-					valid_packet = FALSE;
+					valid_packet = false;
 					continue;
 				}
 			}
@@ -664,7 +664,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 			{
 				logMsgFromInvalidCircuit( host, recv_reliable );
 				clearReceiveState();
-				valid_packet = FALSE;
+				valid_packet = false;
 			}
 
 			if(
@@ -677,12 +677,12 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 				clearReceiveState();
 
 				sendDenyTrustedCircuit(host);
-				valid_packet = FALSE;
+				valid_packet = false;
 			}
 
 			if( valid_packet )
 			{
-				logValidMsg(cdp, host, recv_reliable, recv_resent, (BOOL)(acks>0) );
+				logValidMsg(cdp, host, recv_reliable, recv_resent, acks>0 );
 				valid_packet = mTemplateMessageReader->readMessage(buffer, host);
 			}
 
@@ -943,7 +943,7 @@ void LLMessageSystem::nextBlock(const char *blockname)
 	nextBlockFast(LLMessageStringTable::getInstance()->getString(blockname));
 }
 
-BOOL LLMessageSystem::isSendFull(const char* blockname)
+bool LLMessageSystem::isSendFull(const char* blockname)
 {
 	char* stringTableName = NULL;
 	if(NULL != blockname)
@@ -953,7 +953,7 @@ BOOL LLMessageSystem::isSendFull(const char* blockname)
 	return isSendFullFast(stringTableName);
 }
 
-BOOL LLMessageSystem::isSendFullFast(const char* blockname)
+bool LLMessageSystem::isSendFullFast(const char* blockname)
 {
 	return mMessageBuilder->isMessageFull(blockname);
 }
@@ -961,7 +961,7 @@ BOOL LLMessageSystem::isSendFullFast(const char* blockname)
 
 // blow away the last block of a message, return FALSE if that leaves no blocks or there wasn't a block to remove
 // TODO: Babbage: Remove this horror.
-BOOL LLMessageSystem::removeLastBlock()
+bool LLMessageSystem::removeLastBlock()
 {
 	return mMessageBuilder->removeLastBlock();
 }
@@ -1524,7 +1524,7 @@ void LLMessageSystem::enableCircuit(const LLHost &host, BOOL trusted)
 	}
 	else
 	{
-		cdp->setAlive(TRUE);
+		cdp->setAlive(true);
 	}
 	cdp->setTrusted(trusted);
 }
@@ -1595,14 +1595,14 @@ void LLMessageSystem::setCircuitTimeoutCallback(const LLHost &host, void (*callb
 }
 
 
-BOOL LLMessageSystem::checkCircuitBlocked(const U32 circuit)
+bool LLMessageSystem::checkCircuitBlocked(const U32 circuit)
 {
 	LLHost host = findHost(circuit);
 
 	if (!host.isOk())
 	{
 		LL_DEBUGS("Messaging") << "checkCircuitBlocked: Unknown circuit " << circuit << LL_ENDL;
-		return TRUE;
+		return true;
 	}
 
 	LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
@@ -1613,18 +1613,18 @@ BOOL LLMessageSystem::checkCircuitBlocked(const U32 circuit)
 	else
 	{
 		LL_INFOS("Messaging") << "checkCircuitBlocked(circuit): Unknown host - " << host << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 }
 
-BOOL LLMessageSystem::checkCircuitAlive(const U32 circuit)
+bool LLMessageSystem::checkCircuitAlive(const U32 circuit)
 {
 	LLHost host = findHost(circuit);
 
 	if (!host.isOk())
 	{
 		LL_DEBUGS("Messaging") << "checkCircuitAlive: Unknown circuit " << circuit << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 
 	LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
@@ -1635,11 +1635,11 @@ BOOL LLMessageSystem::checkCircuitAlive(const U32 circuit)
 	else
 	{
 		LL_INFOS("Messaging") << "checkCircuitAlive(circuit): Unknown host - " << host << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 }
 
-BOOL LLMessageSystem::checkCircuitAlive(const LLHost &host)
+bool LLMessageSystem::checkCircuitAlive(const LLHost &host)
 {
 	LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
 	if (cdp)
@@ -1649,7 +1649,7 @@ BOOL LLMessageSystem::checkCircuitAlive(const LLHost &host)
 	else
 	{
 		LL_DEBUGS("Messaging") << "checkCircuitAlive(host): Unknown host - " << host << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 }
 
@@ -2291,7 +2291,7 @@ void process_create_trusted_circuit(LLMessageSystem *msg, void **)
 	their_digest[MD5HEX_STR_SIZE - 1] = '\0';
 	if(msg->isMatchingDigestForWindowAndUUIDs(their_digest, TRUST_TIME_WINDOW, local_id, remote_id))
 	{
-		cdp->setTrusted(TRUE);
+		cdp->setTrusted(true);
 		LL_INFOS("Messaging") << "Trusted digest from " << msg->getSender() << LL_ENDL;
 		return;
 	}
@@ -2715,7 +2715,7 @@ void LLMessageSystem::dumpReceiveCounts()
 
 
 
-BOOL LLMessageSystem::isClear() const
+bool LLMessageSystem::isClear() const
 {
 	return mMessageBuilder->isClear();
 }
@@ -2981,12 +2981,12 @@ void LLMessageSystem::setExceptionFunc(EMessageException e,
 	}
 }
 
-BOOL LLMessageSystem::callExceptionFunc(EMessageException exception)
+bool LLMessageSystem::callExceptionFunc(EMessageException exception)
 {
 	callbacks_t::iterator it = mExceptionCallbacks.find(exception);
 	if(it == mExceptionCallbacks.end())
 	{
-		return FALSE;
+		return false;
 	}
 
 	exception_t& ex = it->second;
@@ -2995,12 +2995,12 @@ BOOL LLMessageSystem::callExceptionFunc(EMessageException exception)
 	if (!ex_cb)
 	{
 		LL_WARNS("Messaging") << "LLMessageSystem::callExceptionFunc: bad message exception callback." << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 
 	(ex_cb)(this, ex.second, exception);
 
-	return TRUE;
+	return true;
 }
 
 void LLMessageSystem::setTimingFunc(msg_timing_callback func, void* data)
@@ -3009,14 +3009,14 @@ void LLMessageSystem::setTimingFunc(msg_timing_callback func, void* data)
 	mTimingCallbackData = data;
 }
 
-BOOL LLMessageSystem::isCircuitCodeKnown(U32 code) const
+bool LLMessageSystem::isCircuitCodeKnown(U32 code) const
 {
 	if(mCircuitCodes.find(code) == mCircuitCodes.end())
-		return FALSE;
-	return TRUE;
+		return false;
+	return true;
 }
 
-BOOL LLMessageSystem::isMessageFast(const char *msg)
+bool LLMessageSystem::isMessageFast(const char *msg)
 {
 	return msg == mMessageReader->getMessageName();
 }
@@ -3561,12 +3561,12 @@ void LLMessageSystem::addIPPort(const char *varname, U16 v)
 	mMessageBuilder->addIPPort(LLMessageStringTable::getInstance()->getString(varname), v);
 }
 
-void LLMessageSystem::addBOOLFast(const char* varname, BOOL v)
+void LLMessageSystem::addBOOLFast(const char* varname, bool v)
 {
 	mMessageBuilder->addBOOL(varname, v);
 }
 
-void LLMessageSystem::addBOOL(const char* varname, BOOL v)
+void LLMessageSystem::addBOOL(const char* varname, bool v)
 {
 	mMessageBuilder->addBOOL(LLMessageStringTable::getInstance()->getString(varname), v);
 }
@@ -3969,7 +3969,7 @@ S32 LLMessageSystem::getReceiveSize() const
 }
 
 //static 
-void LLMessageSystem::setTimeDecodes( BOOL b )
+void LLMessageSystem::setTimeDecodes( bool b )
 {
 	LLMessageReader::setTimeDecodes(b);
 }
diff --git a/indra/llmessage/message.h b/indra/llmessage/message.h
index c041a69d79..c40da26067 100644
--- a/indra/llmessage/message.h
+++ b/indra/llmessage/message.h
@@ -390,7 +390,7 @@ public:
 	void setExceptionFunc(EMessageException exception, msg_exception_callback func, void* data = NULL);
 	// Call the specified exception func, and return TRUE if a
 	// function was found and called. Otherwise return FALSE.
-	BOOL callExceptionFunc(EMessageException exception);
+	bool callExceptionFunc(EMessageException exception);
 
 	// Set a function that will be called once per packet processed with the 
 	// hashed message name and the time spent in the processing handler function
@@ -407,18 +407,18 @@ public:
 	}
 
 	// This method returns true if the code is in the circuit codes map.
-	BOOL isCircuitCodeKnown(U32 code) const;
+	bool isCircuitCodeKnown(U32 code) const;
 
 	// usually called in response to an AddCircuitCode message, but
 	// may also be called by the login process.
 	bool addCircuitCode(U32 code, const LLUUID& session_id);
 
-	BOOL	poll(F32 seconds); // Number of seconds that we want to block waiting for data, returns if data was received
-	BOOL	checkMessages(LockMessageChecker&, S64 frame_count = 0 );
+	bool	poll(F32 seconds); // Number of seconds that we want to block waiting for data, returns if data was received
+	bool	checkMessages(LockMessageChecker&, S64 frame_count = 0 );
 	void	processAcks(LockMessageChecker&, F32 collect_time = 0.f);
 
-	BOOL	isMessageFast(const char *msg);
-	BOOL	isMessage(const char *msg)
+	bool	isMessageFast(const char *msg);
+	bool	isMessage(const char *msg)
 	{
 		return isMessageFast(LLMessageStringTable::getInstance()->getString(msg));
 	}
@@ -482,8 +482,8 @@ public:
 	void addBinaryDataFast(const char *varname, const void *data, S32 size);
 	void addBinaryData(const char *varname, const void *data, S32 size);
 
-	void	addBOOLFast( const char* varname, BOOL b);						// typed, checks storage space
-	void	addBOOL( const char* varname, BOOL b);						// typed, checks storage space
+	void	addBOOLFast( const char* varname, bool b);						// typed, checks storage space
+	void	addBOOL( const char* varname, bool b);						// typed, checks storage space
 	void	addS8Fast(	const char *varname, S8 s);							// typed, checks storage space
 	void	addS8(	const char *varname, S8 s);							// typed, checks storage space
 	void	addU8Fast(	const char *varname, U8 u);							// typed, checks storage space
@@ -528,10 +528,10 @@ public:
 	// you need to go to the next block type or need to start a new
 	// message. Specify the current blockname to check block counts,
 	// otherwise the method only checks against MTU.
-	BOOL isSendFull(const char* blockname = NULL);
-	BOOL isSendFullFast(const char* blockname = NULL);
+	bool isSendFull(const char* blockname = NULL);
+	bool isSendFullFast(const char* blockname = NULL);
 
-	BOOL removeLastBlock();
+	bool removeLastBlock();
 
 	//void	buildMessage();
 
@@ -717,9 +717,9 @@ public:
 	void	setCircuitAllowTimeout(const LLHost &host, BOOL allow);
 	void	setCircuitTimeoutCallback(const LLHost &host, void (*callback_func)(const LLHost &host, void *user_data), void *user_data);
 
-	BOOL	checkCircuitBlocked(const U32 circuit);
-	BOOL	checkCircuitAlive(const U32 circuit);
-	BOOL	checkCircuitAlive(const LLHost &host);
+	bool	checkCircuitBlocked(const U32 circuit);
+	bool	checkCircuitAlive(const U32 circuit);
+	bool	checkCircuitAlive(const LLHost &host);
 	void	setCircuitProtection(BOOL b_protect);
 	U32		findCircuitCode(const LLHost &host);
 	LLHost	findHost(const U32 circuit_code);
@@ -738,7 +738,7 @@ public:
 	void	dumpReceiveCounts();				// dumps receive count for each message type to LL_INFOS()
 	void	dumpCircuitInfo();					// Circuit information to LL_INFOS()
 
-	BOOL	isClear() const;					// returns mbSClear;
+	bool	isClear() const;					// returns mbSClear;
 	S32 	flush(const LLHost &host);
 
 	U32		getListenPort( void ) const;
@@ -765,8 +765,8 @@ public:
 	static U64Microseconds getMessageTimeUsecs(const BOOL update = FALSE);	// Get the current message system time in microseconds
 	static F64Seconds getMessageTimeSeconds(const BOOL update = FALSE); // Get the current message system time in seconds
 
-	static void setTimeDecodes(BOOL b);
-	static void setTimeDecodesSpamThreshold(F32 seconds); 
+	static void setTimeDecodes(bool b);
+	static void setTimeDecodesSpamThreshold(F32 seconds);
 
 	// message handlers internal to the message systesm
 	//static void processAssignCircuitCode(LLMessageSystem* msg, void**);
diff --git a/indra/llmessage/partsyspacket.cpp b/indra/llmessage/partsyspacket.cpp
index d87de38aa5..d42a7ef989 100644
--- a/indra/llmessage/partsyspacket.cpp
+++ b/indra/llmessage/partsyspacket.cpp
@@ -1052,7 +1052,7 @@ U32 LLPartSysCompressedPacket::readWindDiffusionFactor(LLPartInitData *in, U32 s
 	return startByte;
 }
 
-BOOL LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed)
+bool LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed)
 {
 
 	writeFlagByte(in);
@@ -1171,7 +1171,7 @@ BOOL LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &byte
 	return TRUE;
 }
 
-BOOL LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytesUsed)
+bool LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytesUsed)
 {
 	U32 currByte = 4;
 
@@ -1259,21 +1259,21 @@ BOOL LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytes
 	}
 
 	*bytesUsed = currByte;
-	return TRUE;
+	return true;
 }
 
-BOOL LLPartSysCompressedPacket::fromUnsignedBytes(U8 *in, U32 bytesUsed)
+bool LLPartSysCompressedPacket::fromUnsignedBytes(U8 *in, U32 bytesUsed)
 {
 	if ((in != NULL) && (bytesUsed <= sizeof(mData)))
 	{
 		memcpy(mData, in, bytesUsed);	/* Flawfinder: ignore */
 		mNumBytes = bytesUsed;
-		return TRUE;
+		return true;
 	}
 	else
 	{
 		LL_ERRS() << "NULL input data or number of bytes exceed mData size" << LL_ENDL;
-		return FALSE;
+		return false;
 	}
 }		
 	
@@ -1283,10 +1283,10 @@ U32 LLPartSysCompressedPacket::bufferSize()
 	return mNumBytes;
 }
 
-BOOL LLPartSysCompressedPacket::toUnsignedBytes(U8 *out)
+bool LLPartSysCompressedPacket::toUnsignedBytes(U8 *out)
 {
 	memcpy(out, mData, mNumBytes);		/* Flawfinder: ignore */
-	return TRUE;
+	return true;
 }
 
 U8 * LLPartSysCompressedPacket::getBytePtr()
diff --git a/indra/llmessage/partsyspacket.h b/indra/llmessage/partsyspacket.h
index d9abecea3f..0a8e433cbd 100644
--- a/indra/llmessage/partsyspacket.h
+++ b/indra/llmessage/partsyspacket.h
@@ -202,10 +202,10 @@ class LLPartSysCompressedPacket
 public:
 	LLPartSysCompressedPacket();
 	~LLPartSysCompressedPacket();
-	BOOL	fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed);
-	BOOL	toLLPartInitData(LLPartInitData *out, U32 *bytesUsed);
-	BOOL	fromUnsignedBytes(U8 *in, U32 bytesUsed);
-	BOOL	toUnsignedBytes(U8 *out);
+	bool	fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed);
+	bool	toLLPartInitData(LLPartInitData *out, U32 *bytesUsed);
+	bool	fromUnsignedBytes(U8 *in, U32 bytesUsed);
+	bool	toUnsignedBytes(U8 *out);
 	U32		bufferSize();
 	U8		*getBytePtr();
 
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 4b0fbc0466..2ded1d1906 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -45,7 +45,7 @@
 #include "llglheaders.h"
 #include "glh/glh_linear.h"
 
-extern BOOL gDebugGL;
+extern bool gDebugGL;
 extern BOOL gDebugSession;
 extern BOOL gDebugGLSession;
 extern llofstream gFailLog;
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index 6315b2cd7c..78c4c90663 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -2072,9 +2072,9 @@ S64 LLImageGL::getMipBytes(S32 discard_level) const
 	return res;
 }
 
-BOOL LLImageGL::isJustBound() const
+bool LLImageGL::isJustBound() const
 {
-	return (BOOL)(sLastFrameTime - mLastBindTime < 0.5f);
+	return sLastFrameTime - mLastBindTime < 0.5f;
 }
 
 BOOL LLImageGL::getBoundRecently() const
diff --git a/indra/llrender/llimagegl.h b/indra/llrender/llimagegl.h
index a9a6b93cb3..1b77fd0964 100644
--- a/indra/llrender/llimagegl.h
+++ b/indra/llrender/llimagegl.h
@@ -148,7 +148,7 @@ public:
 	S64  getBytes(S32 discard_level = -1) const;
 	S64  getMipBytes(S32 discard_level = -1) const;
 	BOOL getBoundRecently() const;
-	BOOL isJustBound() const;
+	bool isJustBound() const;
 	BOOL getHasExplicitFormat() const { return mHasExplicitFormat; }
 	LLGLenum getPrimaryFormat() const { return mFormatPrimary; }
 	LLGLenum getFormatType() const { return mFormatType; }
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 89d3428d9b..4ffd9198a2 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -286,7 +286,7 @@ extern void init_apple_menu(const char* product);
 
 extern BOOL gRandomizeFramerate;
 extern BOOL gPeriodicSlowFrame;
-extern BOOL gDebugGL;
+extern bool gDebugGL;
 
 #if LL_DARWIN
 extern bool gHiDPISupport;
diff --git a/indra/newview/llfloatergodtools.cpp b/indra/newview/llfloatergodtools.cpp
index 4b22f7427b..24e7d8af04 100644
--- a/indra/newview/llfloatergodtools.cpp
+++ b/indra/newview/llfloatergodtools.cpp
@@ -1344,7 +1344,7 @@ void LLPanelRequestTools::sendRequest(const LLHost& host)
 	{
 		gXferManager->requestFile(std::string("terrain.raw"), std::string("terrain.raw"), LL_PATH_NONE,
 								  host,
-								  FALSE,
+								  false,
 								  terrain_download_done,
 								  NULL);
 	}
diff --git a/indra/newview/llmutelist.cpp b/indra/newview/llmutelist.cpp
index a7a7ed1b70..01763e4934 100644
--- a/indra/newview/llmutelist.cpp
+++ b/indra/newview/llmutelist.cpp
@@ -782,7 +782,7 @@ void LLMuteList::processMuteListUpdate(LLMessageSystem* msg, void**)
 							  filename,
 							  LL_PATH_CACHE,
 							  msg->getSender(),
-							  TRUE, // make the remote file temporary.
+							  true, // make the remote file temporary.
 							  onFileMuteList,
 							  (void**)local_filename_and_path,
 							  LLXferManager::HIGH_PRIORITY);
diff --git a/indra/newview/llviewerassetstorage.cpp b/indra/newview/llviewerassetstorage.cpp
index aa9ff012c3..2c47ef0e32 100644
--- a/indra/newview/llviewerassetstorage.cpp
+++ b/indra/newview/llviewerassetstorage.cpp
@@ -361,8 +361,8 @@ void LLViewerAssetStorage::_queueDataRequest(
     LLAssetType::EType atype,
     LLGetAssetCallback callback,
     void *user_data,
-    BOOL duplicate,
-    BOOL is_priority)
+    bool duplicate,
+    bool is_priority)
 {
     mCountRequests++;
     queueRequestHttp(uuid, atype, callback, user_data, duplicate, is_priority);
@@ -373,8 +373,8 @@ void LLViewerAssetStorage::queueRequestHttp(
     LLAssetType::EType atype,
     LLGetAssetCallback callback,
     void *user_data,
-    BOOL duplicate,
-    BOOL is_priority)
+    bool duplicate,
+    bool is_priority)
 {
     LL_DEBUGS("ViewerAsset") << "Request asset via HTTP " << uuid << " type " << LLAssetType::lookup(atype) << LL_ENDL;
 
diff --git a/indra/newview/llviewerassetstorage.h b/indra/newview/llviewerassetstorage.h
index c3719d0918..cc1854d496 100644
--- a/indra/newview/llviewerassetstorage.h
+++ b/indra/newview/llviewerassetstorage.h
@@ -70,15 +70,15 @@ protected:
 						   LLAssetType::EType type,
                            LLGetAssetCallback callback,
 						   void *user_data,
-						   BOOL duplicate,
-						   BOOL is_priority) override;
+						   bool duplicate,
+						   bool is_priority) override;
 
     void queueRequestHttp(const LLUUID& uuid,
                           LLAssetType::EType type,
                           LLGetAssetCallback callback,
                           void *user_data,
-                          BOOL duplicate,
-                          BOOL is_priority);
+                          bool duplicate,
+                          bool is_priority);
 
     void capsRecvForRegion(const LLUUID& region_id, std::string pumpname);
     
diff --git a/indra/newview/llviewercontrol.cpp b/indra/newview/llviewercontrol.cpp
index 61cc1dee25..9b5719ea1c 100644
--- a/indra/newview/llviewercontrol.cpp
+++ b/indra/newview/llviewercontrol.cpp
@@ -95,7 +95,7 @@ std::string gLastRunVersion;
 
 extern BOOL gResizeScreenTexture;
 extern BOOL gResizeShadowTexture;
-extern BOOL gDebugGL;
+extern bool gDebugGL;
 ////////////////////////////////////////////////////////////////////////////
 // Listeners
 
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index 8bf69d54bd..cf14b59292 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -6805,7 +6805,7 @@ void process_initiate_download(LLMessageSystem* msg, void**)
 		sim_filename,
 		LL_PATH_NONE,
 		msg->getSender(),
-		FALSE,	// don't delete remote
+		false,	// don't delete remote
 		callback_download_complete,
 		(void**)new std::string(viewer_filename));
 }
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index a0a9da5bec..1b7c668b7d 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -3186,7 +3186,7 @@ void LLViewerObject::processTaskInv(LLMessageSystem* msg, void** user_data)
         U64 new_id = gXferManager->requestFile(gDirUtilp->getExpandedFilename(LL_PATH_CACHE, ft->mFilename),
             ft->mFilename, LL_PATH_CACHE,
             object->mRegionp->getHost(),
-            TRUE,
+            true,
             &LLViewerObject::processTaskInvFile,
             (void**)ft, // This takes ownership of ft
             LLXferManager::HIGH_PRIORITY);
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 0917a819d0..a91da62f80 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -2140,13 +2140,13 @@ void LLVOVolume::updateFaceSize(S32 idx)
 	}
 }
 
-BOOL LLVOVolume::isRootEdit() const
+bool LLVOVolume::isRootEdit() const
 {
 	if (mParent && !((LLViewerObject*)mParent)->isAvatar())
 	{
-		return FALSE;
+		return false;
 	}
-	return TRUE;
+	return true;
 }
 
 //virtual
diff --git a/indra/newview/llvovolume.h b/indra/newview/llvovolume.h
index b65450a3f2..b8ccc26cad 100644
--- a/indra/newview/llvovolume.h
+++ b/indra/newview/llvovolume.h
@@ -134,7 +134,7 @@ public:
 	            BOOL    isVisible() const ;
 	BOOL isActive() const override;
 	BOOL isAttachment() const override;
-	BOOL isRootEdit() const override; // overridden for sake of attachments treating themselves as a root object
+	bool isRootEdit() const override; // overridden for sake of attachments treating themselves as a root object
 	BOOL isHUDAttachment() const override;
 
 				void	generateSilhouette(LLSelectNode* nodep, const LLVector3& view_point);
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 3a1edb0d00..7f83f17def 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -209,7 +209,7 @@ const U32 DEFERRED_VB_MASK = LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TE
 extern S32 gBoxFrame;
 //extern BOOL gHideSelectedObjects;
 extern BOOL gDisplaySwapBuffers;
-extern BOOL gDebugGL;
+extern bool gDebugGL;
 extern BOOL gCubeSnapshot;
 extern BOOL gSnapshotNoPost;