diff --git a/doc/gl-docs/GL/glx/xchoosevisual.3gl b/doc/gl-docs/GL/glx/xchoosevisual.3gl
index e4b0dd812..28b2ebb37 100644
--- a/doc/gl-docs/GL/glx/xchoosevisual.3gl
+++ b/doc/gl-docs/GL/glx/xchoosevisual.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 58988 14 xchoosevisual.gl
-.TH GLXCHOOSEVISUAL
+.TH GLXCHOOSEVISUAL 3
 .SH NAME
 glXChooseVisual
 \- return a visual that matches specified attributes
diff --git a/doc/gl-docs/GL/glx/xcopycontext.3gl b/doc/gl-docs/GL/glx/xcopycontext.3gl
index 6703b0fbf..8e18ccee3 100644
--- a/doc/gl-docs/GL/glx/xcopycontext.3gl
+++ b/doc/gl-docs/GL/glx/xcopycontext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 49166 6 xcopycontext.gl
-.TH GLXCOPYCONTEXT
+.TH GLXCOPYCONTEXT 3
 .SH NAME
 glXCopyContext
 \- copy state from one rendering context to another
diff --git a/doc/gl-docs/GL/glx/xcreatecontext.3gl b/doc/gl-docs/GL/glx/xcreatecontext.3gl
index acb0ca2db..c49bcf5d3 100644
--- a/doc/gl-docs/GL/glx/xcreatecontext.3gl
+++ b/doc/gl-docs/GL/glx/xcreatecontext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 16965 8 xcreatecontext.gl
-.TH GLXCREATECONTEXT
+.TH GLXCREATECONTEXT 3
 .SH NAME
 glXCreateContext
 \- create a new GLX rendering context
diff --git a/doc/gl-docs/GL/glx/xcreateglxpixmap.3gl b/doc/gl-docs/GL/glx/xcreateglxpixmap.3gl
index 0db59c58b..b37bdbb5d 100644
--- a/doc/gl-docs/GL/glx/xcreateglxpixmap.3gl
+++ b/doc/gl-docs/GL/glx/xcreateglxpixmap.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 62493 5 xcreateglxpixmap.gl
-.TH GLXCREATEGLXPIXMAP
+.TH GLXCREATEGLXPIXMAP 3
 .SH NAME
 glXCreateGLXPixmap
 \- create an off-screen GLX rendering area
diff --git a/doc/gl-docs/GL/glx/xdestroycontext.3gl b/doc/gl-docs/GL/glx/xdestroycontext.3gl
index 62d5fdf80..2809fae14 100644
--- a/doc/gl-docs/GL/glx/xdestroycontext.3gl
+++ b/doc/gl-docs/GL/glx/xdestroycontext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 5532 2 xdestroycontext.gl
-.TH GLXDESTROYCONTEXT
+.TH GLXDESTROYCONTEXT 3
 .SH NAME
 glXDestroyContext
 \- destroy a GLX context
diff --git a/doc/gl-docs/GL/glx/xdestroyglxpixmap.3gl b/doc/gl-docs/GL/glx/xdestroyglxpixmap.3gl
index 0f79e5538..409062e8b 100644
--- a/doc/gl-docs/GL/glx/xdestroyglxpixmap.3gl
+++ b/doc/gl-docs/GL/glx/xdestroyglxpixmap.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 2275 2 xdestroyglxpixmap.gl
-.TH GLXDESTROYGLXPIXMAP
+.TH GLXDESTROYGLXPIXMAP 3
 .SH NAME
 glXDestroyGLXPixmap
 \- destroy a GLX pixmap
diff --git a/doc/gl-docs/GL/glx/xfreecontextext.3gl b/doc/gl-docs/GL/glx/xfreecontextext.3gl
index 1a7daa4fd..550f1bf79 100644
--- a/doc/gl-docs/GL/glx/xfreecontextext.3gl
+++ b/doc/gl-docs/GL/glx/xfreecontextext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 37853 3 xfreecontextext.gl
-.TH GLXFREECONTEXTEXT
+.TH GLXFREECONTEXTEXT 3
 .SH NAME
 glXFreeContextEXT
 \- free client-side memory for imported context
diff --git a/doc/gl-docs/GL/glx/xgetclientstring.3gl b/doc/gl-docs/GL/glx/xgetclientstring.3gl
index 1c7a809dc..f4c9c87a3 100644
--- a/doc/gl-docs/GL/glx/xgetclientstring.3gl
+++ b/doc/gl-docs/GL/glx/xgetclientstring.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 29851 4 xgetclientstring.gl
-.TH GLXGETCLIENTSTRING
+.TH GLXGETCLIENTSTRING 3
 .SH NAME
 glXGetClientString
 \- return a string describing the client
diff --git a/doc/gl-docs/GL/glx/xgetconfig.3gl b/doc/gl-docs/GL/glx/xgetconfig.3gl
index 2c890bc6e..297620c51 100644
--- a/doc/gl-docs/GL/glx/xgetconfig.3gl
+++ b/doc/gl-docs/GL/glx/xgetconfig.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 60987 10 xgetconfig.gl
-.TH GLXGETCONFIG
+.TH GLXGETCONFIG 3
 .SH NAME
 glXGetConfig
 \- return information about GLX visuals
diff --git a/doc/gl-docs/GL/glx/xgetcontextidext.3gl b/doc/gl-docs/GL/glx/xgetcontextidext.3gl
index 1f54d89d2..863ac5a15 100644
--- a/doc/gl-docs/GL/glx/xgetcontextidext.3gl
+++ b/doc/gl-docs/GL/glx/xgetcontextidext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 25633 3 xgetcontextidext.gl
-.TH GLXGETCONTEXTIDEXT
+.TH GLXGETCONTEXTIDEXT 3
 .SH NAME
 glXGetContextIDEXT
 \- get the XID for a context.
diff --git a/doc/gl-docs/GL/glx/xgetcurrentcontext.3gl b/doc/gl-docs/GL/glx/xgetcurrentcontext.3gl
index 35f270601..2a67ae38e 100644
--- a/doc/gl-docs/GL/glx/xgetcurrentcontext.3gl
+++ b/doc/gl-docs/GL/glx/xgetcurrentcontext.3gl
@@ -5,7 +5,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 49308 2 xgetcurrentcontext.gl
-.TH GLXGETCURRENTCONTEXT
+.TH GLXGETCURRENTCONTEXT 3
 .SH NAME
 glXGetCurrentContext
 \- return the current context
diff --git a/doc/gl-docs/GL/glx/xgetcurrentdisplay.3gl b/doc/gl-docs/GL/glx/xgetcurrentdisplay.3gl
index 5f3f2604e..dbe449987 100644
--- a/doc/gl-docs/GL/glx/xgetcurrentdisplay.3gl
+++ b/doc/gl-docs/GL/glx/xgetcurrentdisplay.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 59497 2 xgetcurrentdisplay.gl
-.TH GLXGETCURRENTDISPLAY
+.TH GLXGETCURRENTDISPLAY 3
 .SH NAME
 glXGetCurrentDisplay
 \- get display for current context
diff --git a/doc/gl-docs/GL/glx/xgetcurrentdrawable.3gl b/doc/gl-docs/GL/glx/xgetcurrentdrawable.3gl
index f263e2a44..38212ad81 100644
--- a/doc/gl-docs/GL/glx/xgetcurrentdrawable.3gl
+++ b/doc/gl-docs/GL/glx/xgetcurrentdrawable.3gl
@@ -5,7 +5,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 49921 2 xgetcurrentdrawable.gl
-.TH GLXGETCURRENTDRAWABLE
+.TH GLXGETCURRENTDRAWABLE 3
 .SH NAME
 glXGetCurrentDrawable
 \- return the current drawable
diff --git a/doc/gl-docs/GL/glx/ximportcontextext.3gl b/doc/gl-docs/GL/glx/ximportcontextext.3gl
index 67f9fa0a8..f0798c1f0 100644
--- a/doc/gl-docs/GL/glx/ximportcontextext.3gl
+++ b/doc/gl-docs/GL/glx/ximportcontextext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 38402 4 ximportcontextext.gl
-.TH GLXIMPORTCONTEXTEXT
+.TH GLXIMPORTCONTEXTEXT 3
 .SH NAME
 glXImportContextEXT
 \- import another process's indirect rendering context.
diff --git a/doc/gl-docs/GL/glx/xintro.3gl b/doc/gl-docs/GL/glx/xintro.3gl
index 369304242..2018b4361 100644
--- a/doc/gl-docs/GL/glx/xintro.3gl
+++ b/doc/gl-docs/GL/glx/xintro.3gl
@@ -7,7 +7,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 32008 15 xintro.gl
-.TH GLXINTRO
+.TH GLXINTRO 3
 .SH NAME
 glXIntro
 \- Introduction to OpenGL in the X window system
diff --git a/doc/gl-docs/GL/glx/xisdirect.3gl b/doc/gl-docs/GL/glx/xisdirect.3gl
index 0ec8cfe34..6a6d8f96a 100644
--- a/doc/gl-docs/GL/glx/xisdirect.3gl
+++ b/doc/gl-docs/GL/glx/xisdirect.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 12384 2 xisdirect.gl
-.TH GLXISDIRECT
+.TH GLXISDIRECT 3
 .SH NAME
 glXIsDirect
 \- indicate whether direct rendering is enabled
diff --git a/doc/gl-docs/GL/glx/xmakecurrent.3gl b/doc/gl-docs/GL/glx/xmakecurrent.3gl
index 6c0bde27a..2cbb6166e 100644
--- a/doc/gl-docs/GL/glx/xmakecurrent.3gl
+++ b/doc/gl-docs/GL/glx/xmakecurrent.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 28564 7 xmakecurrent.gl
-.TH GLXMAKECURRENT
+.TH GLXMAKECURRENT 3
 .SH NAME
 glXMakeCurrent
 \- attach a GLX context to a window or a GLX pixmap
diff --git a/doc/gl-docs/GL/glx/xquerycontextinfoext.3gl b/doc/gl-docs/GL/glx/xquerycontextinfoext.3gl
index 65d8948f2..855c17dcd 100644
--- a/doc/gl-docs/GL/glx/xquerycontextinfoext.3gl
+++ b/doc/gl-docs/GL/glx/xquerycontextinfoext.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 51469 3 xquerycontextinfoext.gl
-.TH GLXQUERYCONTEXTINFOEXT
+.TH GLXQUERYCONTEXTINFOEXT 3
 .SH NAME
 glXQueryContextInfoEXT
 \- query context information
diff --git a/doc/gl-docs/GL/glx/xqueryextension.3gl b/doc/gl-docs/GL/glx/xqueryextension.3gl
index 348d8ad1f..e5396a11a 100644
--- a/doc/gl-docs/GL/glx/xqueryextension.3gl
+++ b/doc/gl-docs/GL/glx/xqueryextension.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 25267 2 xqueryextension.gl
-.TH GLXQUERYEXTENSION
+.TH GLXQUERYEXTENSION 3
 .SH NAME
 glXQueryExtension
 \- indicate whether the GLX extension is supported
diff --git a/doc/gl-docs/GL/glx/xqueryextensionsstring.3gl b/doc/gl-docs/GL/glx/xqueryextensionsstring.3gl
index 579ecdfba..f98137563 100644
--- a/doc/gl-docs/GL/glx/xqueryextensionsstring.3gl
+++ b/doc/gl-docs/GL/glx/xqueryextensionsstring.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 26309 3 xqueryextensionsstring.gl
-.TH GLXQUERYEXTENSIONSSTRING
+.TH GLXQUERYEXTENSIONSSTRING 3
 .SH NAME
 glXQueryExtensionsString
 \- return list of supported extensions
diff --git a/doc/gl-docs/GL/glx/xqueryserverstring.3gl b/doc/gl-docs/GL/glx/xqueryserverstring.3gl
index 058c4d63a..3201a7141 100644
--- a/doc/gl-docs/GL/glx/xqueryserverstring.3gl
+++ b/doc/gl-docs/GL/glx/xqueryserverstring.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 52600 3 xqueryserverstring.gl
-.TH GLXQUERYSERVERSTRING
+.TH GLXQUERYSERVERSTRING 3
 .SH NAME
 glXQueryServerString
 \- return string describing the server
diff --git a/doc/gl-docs/GL/glx/xqueryversion.3gl b/doc/gl-docs/GL/glx/xqueryversion.3gl
index 762592d3b..47c95b57d 100644
--- a/doc/gl-docs/GL/glx/xqueryversion.3gl
+++ b/doc/gl-docs/GL/glx/xqueryversion.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 36423 3 xqueryversion.gl
-.TH GLXQUERYVERSION
+.TH GLXQUERYVERSION 3
 .SH NAME
 glXQueryVersion
 \- return the version numbers of the GLX extension
diff --git a/doc/gl-docs/GL/glx/xswapbuffers.3gl b/doc/gl-docs/GL/glx/xswapbuffers.3gl
index 0c30b546c..9675b79c2 100644
--- a/doc/gl-docs/GL/glx/xswapbuffers.3gl
+++ b/doc/gl-docs/GL/glx/xswapbuffers.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:56
 .ds Dm  Feb 10 17:2
 .ds Xs 58040 5 xswapbuffers.gl
-.TH GLXSWAPBUFFERS
+.TH GLXSWAPBUFFERS 3
 .SH NAME
 glXSwapBuffers
 \- exchange front and back buffers
diff --git a/doc/gl-docs/GL/glx/xusexfont.3gl b/doc/gl-docs/GL/glx/xusexfont.3gl
index 69ec4ab52..b48af5cb3 100644
--- a/doc/gl-docs/GL/glx/xusexfont.3gl
+++ b/doc/gl-docs/GL/glx/xusexfont.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:57
 .ds Dm  Feb 10 17:2
 .ds Xs 55673 5 xusexfont.gl
-.TH GLXUSEXFONT
+.TH GLXUSEXFONT 3
 .SH NAME
 glXUseXFont
 \- create bitmap display lists from an X font
diff --git a/doc/gl-docs/GL/glx/xwaitgl.3gl b/doc/gl-docs/GL/glx/xwaitgl.3gl
index 3d40cd5f7..4111c80e3 100644
--- a/doc/gl-docs/GL/glx/xwaitgl.3gl
+++ b/doc/gl-docs/GL/glx/xwaitgl.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:57
 .ds Dm  Feb 10 17:2
 .ds Xs 20224 2 xwaitgl.gl
-.TH GLXWAITGL
+.TH GLXWAITGL 3
 .SH NAME
 glXWaitGL
 \- complete GL execution prior to subsequent X calls
diff --git a/doc/gl-docs/GL/glx/xwaitx.3gl b/doc/gl-docs/GL/glx/xwaitx.3gl
index b4c2adcbe..af4ea2193 100644
--- a/doc/gl-docs/GL/glx/xwaitx.3gl
+++ b/doc/gl-docs/GL/glx/xwaitx.3gl
@@ -6,7 +6,7 @@
 .ds Dp Feb 16 02:57
 .ds Dm  Feb 10 17:2
 .ds Xs 20029 2 xwaitx.gl
-.TH GLXWAITX
+.TH GLXWAITX 3
 .SH NAME
 glXWaitX
 \- complete X execution prior to subsequent GL calls
diff --git a/doc/gl-docs/GLw/glwcreatemdrawingarea.gl b/doc/gl-docs/GLw/glwcreatemdrawingarea.gl
index 5493e2585..54c3f2778 100644
--- a/doc/gl-docs/GLw/glwcreatemdrawingarea.gl
+++ b/doc/gl-docs/GLw/glwcreatemdrawingarea.gl
@@ -10,7 +10,7 @@
 .\" **      Maynard, MA.  All Rights Reserved.
 .\" **
 .\" **
-.TH GLwCreateMDrawingArea 3X "" "" "" ""
+.TH GLwCreateMDrawingArea 3X "" "" ""
 .SH NAME
 \fBGLwCreateMDrawingArea \(em Create a Motif/OpenGL Drawing Widget.\fP
 .iX "GLwCreateMDrawingArea"
diff --git a/doc/gl-docs/GLw/glwdrawingarea.gl b/doc/gl-docs/GLw/glwdrawingarea.gl
index f602fdb4e..a70372294 100644
--- a/doc/gl-docs/GLw/glwdrawingarea.gl
+++ b/doc/gl-docs/GLw/glwdrawingarea.gl
@@ -10,7 +10,7 @@
 .\" **      Maynard, MA.  All Rights Reserved.
 .\" **
 .\" **
-.TH GLwDrawingArea 3X "" "" "" ""
+.TH GLwDrawingArea 3X "" "" ""
 .SH NAME
 \fBGLwDrawingArea, GLwMDrawingArea \(em OpenGL drawing widgets.\fP
 .iX "GLwDrawingArea" "GLwMDrawingArea"
diff --git a/doc/gl-docs/GLw/glwdrawingareamakecurrent.gl b/doc/gl-docs/GLw/glwdrawingareamakecurrent.gl
index a0f05b304..6484ecc79 100644
--- a/doc/gl-docs/GLw/glwdrawingareamakecurrent.gl
+++ b/doc/gl-docs/GLw/glwdrawingareamakecurrent.gl
@@ -10,7 +10,7 @@
 .\" **      Maynard, MA.  All Rights Reserved.
 .\" **
 .\" **
-.TH GLwDrawingAreaMakeCurrent 3X "" "" "" ""
+.TH GLwDrawingAreaMakeCurrent 3X "" "" ""
 .SH NAME
 \fBGLwDrawingAreaMakeCurrent \(em Make the current GLwDrawingArea current.\fP
 .iX "GLwDrawingAreaMakeCurrent"
diff --git a/doc/gl-docs/GLw/glwdrawingareaswapbuffers.gl b/doc/gl-docs/GLw/glwdrawingareaswapbuffers.gl
index 3ade035b3..cda0e8e07 100644
--- a/doc/gl-docs/GLw/glwdrawingareaswapbuffers.gl
+++ b/doc/gl-docs/GLw/glwdrawingareaswapbuffers.gl
@@ -10,7 +10,7 @@
 .\" **      Maynard, MA.  All Rights Reserved.
 .\" **
 .\" **
-.TH GLwDrawingAreaSwapBuffers 3X "" "" "" ""
+.TH GLwDrawingAreaSwapBuffers 3X "" "" ""
 .SH NAME
 \fBGLwDrawingAreaSwapBuffers \(em Swap buffers in a GLwDrawingArea.\fP
 .iX "GLwDrawingAreaSwapBuffers"