diff --git a/after/syntax/c/opengl.vim b/after/syntax/c/opengl.vim
index 0aad54a..8104e7a 100644
--- a/after/syntax/c/opengl.vim
+++ b/after/syntax/c/opengl.vim
@@ -10,6 +10,9 @@
 "   Source it from somewhere
 "
 " Changelog: 
+"   2013-04-24
+"       * Update GLUT support for Freeglut 2.8.1 [Released: 5 April 2013]
+"
 "   2012-11-17
 "       * Updated to OpenGL 4.3 specification.
 "       * OpenGL 4.3 functions and tokens organized by extension
@@ -4134,24 +4137,128 @@ endif
 if !exists ("c_opengl_no_glut")
 " GLUT {{{
   " Constants {{{
-  syntax keyword glConstant GLUT_RGB
-  syntax keyword glConstant GLUT_RGBA
-  syntax keyword glConstant GLUT_INDEX
-  syntax keyword glConstant GLUT_SINGLE
-  syntax keyword glConstant GLUT_DOUBLE
   syntax keyword glConstant GLUT_ACCUM
+  syntax keyword glConstant GLUT_ACTION_CONTINUE_EXECUTION
+  syntax keyword glConstant GLUT_ACTION_EXIT
+  syntax keyword glConstant GLUT_ACTION_GLUTMAINLOOP_RETURNS
+  syntax keyword glConstant GLUT_ACTION_ON_WINDOW_CLOSE
+  syntax keyword glConstant GLUT_ACTIVE_ALT
+  syntax keyword glConstant GLUT_ACTIVE_CTRL
+  syntax keyword glConstant GLUT_ACTIVE_SHIFT
+  syntax keyword glConstant GLUT_ALLOW_DIRECT_CONTEXT
   syntax keyword glConstant GLUT_ALPHA
+  syntax keyword glConstant GLUT_API_VERSION
+  syntax keyword glConstant GLUT_AUX
+  syntax keyword glConstant GLUT_AUX1
+  syntax keyword glConstant GLUT_AUX2
+  syntax keyword glConstant GLUT_AUX3
+  syntax keyword glConstant GLUT_AUX4
+  syntax keyword glConstant GLUT_BITMAP_8_BY_13
+  syntax keyword glConstant GLUT_BITMAP_8_BY_13
+  syntax keyword glConstant GLUT_BITMAP_9_BY_15
+  syntax keyword glConstant GLUT_BITMAP_9_BY_15
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
+  syntax keyword glConstant GLUT_BLUE
+  syntax keyword glConstant GLUT_BORDERLESS
+  syntax keyword glConstant GLUT_CAPTIONLESS
+  syntax keyword glConstant GLUT_COMPATIBILITY_PROFILE
+  syntax keyword glConstant GLUT_CORE_PROFILE
+  syntax keyword glConstant GLUT_CREATE_NEW_CONTEXT
+  syntax keyword glConstant GLUT_CURSOR_BOTTOM_LEFT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_BOTTOM_RIGHT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_BOTTOM_SIDE
+  syntax keyword glConstant GLUT_CURSOR_CROSSHAIR
+  syntax keyword glConstant GLUT_CURSOR_CYCLE
+  syntax keyword glConstant GLUT_CURSOR_DESTROY
+  syntax keyword glConstant GLUT_CURSOR_FULL_CROSSHAIR
+  syntax keyword glConstant GLUT_CURSOR_HELP
+  syntax keyword glConstant GLUT_CURSOR_INFO
+  syntax keyword glConstant GLUT_CURSOR_INHERIT
+  syntax keyword glConstant GLUT_CURSOR_LEFT_ARROW
+  syntax keyword glConstant GLUT_CURSOR_LEFT_RIGHT
+  syntax keyword glConstant GLUT_CURSOR_LEFT_SIDE
+  syntax keyword glConstant GLUT_CURSOR_NONE
+  syntax keyword glConstant GLUT_CURSOR_RIGHT_ARROW
+  syntax keyword glConstant GLUT_CURSOR_RIGHT_SIDE
+  syntax keyword glConstant GLUT_CURSOR_SPRAY
+  syntax keyword glConstant GLUT_CURSOR_TEXT
+  syntax keyword glConstant GLUT_CURSOR_TOP_LEFT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_TOP_RIGHT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_TOP_SIDE
+  syntax keyword glConstant GLUT_CURSOR_UP_DOWN
+  syntax keyword glConstant GLUT_CURSOR_WAIT
+  syntax keyword glConstant GLUT_DEBUG
   syntax keyword glConstant GLUT_DEPTH
-  syntax keyword glConstant GLUT_STENCIL
-  syntax keyword glConstant GLUT_MULTISAMPLE
-  syntax keyword glConstant GLUT_STEREO
-  syntax keyword glConstant GLUT_LUMINANCE
-  syntax keyword glConstant GLUT_LEFT_BUTTON
-  syntax keyword glConstant GLUT_MIDDLE_BUTTON
-  syntax keyword glConstant GLUT_RIGHT_BUTTON
+  syntax keyword glConstant GLUT_DEVICE_IGNORE_KEY_REPEAT
+  syntax keyword glConstant GLUT_DEVICE_KEY_REPEAT
+  syntax keyword glConstant GLUT_DIRECT_RENDERING
+  syntax keyword glConstant GLUT_DISPLAY_MODE_POSSIBLE
+  syntax keyword glConstant GLUT_DOUBLE
   syntax keyword glConstant GLUT_DOWN
-  syntax keyword glConstant GLUT_UP
+  syntax keyword glConstant GLUT_ELAPSED_TIME
+  syntax keyword glConstant GLUT_ENTERED
+  syntax keyword glConstant GLUT_FORCE_DIRECT_CONTEXT
+  syntax keyword glConstant GLUT_FORCE_INDIRECT_CONTEXT
+  syntax keyword glConstant GLUT_FORWARD_COMPATIBLE
+  syntax keyword glConstant GLUT_FULLY_COVERED
+  syntax keyword glConstant GLUT_FULLY_RETAINED
+  syntax keyword glConstant GLUT_FULL_SCREEN
+  syntax keyword glConstant GLUT_GAME_MODE_ACTIVE
+  syntax keyword glConstant GLUT_GAME_MODE_DISPLAY_CHANGED
+  syntax keyword glConstant GLUT_GAME_MODE_HEIGHT
+  syntax keyword glConstant GLUT_GAME_MODE_PIXEL_DEPTH
+  syntax keyword glConstant GLUT_GAME_MODE_POSSIBLE
+  syntax keyword glConstant GLUT_GAME_MODE_REFRESH_RATE
+  syntax keyword glConstant GLUT_GAME_MODE_WIDTH
+  syntax keyword glConstant GLUT_GREEN
+  syntax keyword glConstant GLUT_HAS_DIAL_AND_BUTTON_BOX
+  syntax keyword glConstant GLUT_HAS_JOYSTICK
+  syntax keyword glConstant GLUT_HAS_KEYBOARD
+  syntax keyword glConstant GLUT_HAS_MOUSE
+  syntax keyword glConstant GLUT_HAS_MULTI
+  syntax keyword glConstant GLUT_HAS_OVERLAY
+  syntax keyword glConstant GLUT_HAS_SPACEBALL
+  syntax keyword glConstant GLUT_HAS_TABLET
+  syntax keyword glConstant GLUT_HIDDEN
+  syntax keyword glConstant GLUT_INDEX
+  syntax keyword glConstant GLUT_INIT_DISPLAY_MODE
+  syntax keyword glConstant GLUT_INIT_FLAGS
+  syntax keyword glConstant GLUT_INIT_MAJOR_VERSION
+  syntax keyword glConstant GLUT_INIT_MINOR_VERSION
+  syntax keyword glConstant GLUT_INIT_PROFILE
+  syntax keyword glConstant GLUT_INIT_STATE
+  syntax keyword glConstant GLUT_INIT_WINDOW_HEIGHT
+  syntax keyword glConstant GLUT_INIT_WINDOW_WIDTH
+  syntax keyword glConstant GLUT_INIT_WINDOW_X
+  syntax keyword glConstant GLUT_INIT_WINDOW_Y
+  syntax keyword glConstant GLUT_JOYSTICK_AXES
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTONS
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_A
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_B
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_C
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_D
+  syntax keyword glConstant GLUT_JOYSTICK_POLL_RATE
+  syntax keyword glConstant GLUT_KEY_ALT_L
+  syntax keyword glConstant GLUT_KEY_ALT_R
+  syntax keyword glConstant GLUT_KEY_BEGIN
+  syntax keyword glConstant GLUT_KEY_CTRL_L
+  syntax keyword glConstant GLUT_KEY_CTRL_R
+  syntax keyword glConstant GLUT_KEY_DELETE
+  syntax keyword glConstant GLUT_KEY_DOWN
+  syntax keyword glConstant GLUT_KEY_END
   syntax keyword glConstant GLUT_KEY_F1
+  syntax keyword glConstant GLUT_KEY_F10
+  syntax keyword glConstant GLUT_KEY_F11
+  syntax keyword glConstant GLUT_KEY_F12
   syntax keyword glConstant GLUT_KEY_F2
   syntax keyword glConstant GLUT_KEY_F3
   syntax keyword glConstant GLUT_KEY_F4
@@ -4160,278 +4267,255 @@ if !exists ("c_opengl_no_glut")
   syntax keyword glConstant GLUT_KEY_F7
   syntax keyword glConstant GLUT_KEY_F8
   syntax keyword glConstant GLUT_KEY_F9
-  syntax keyword glConstant GLUT_KEY_F10
-  syntax keyword glConstant GLUT_KEY_F11
-  syntax keyword glConstant GLUT_KEY_F12
-  syntax keyword glConstant GLUT_KEY_LEFT
-  syntax keyword glConstant GLUT_KEY_UP
-  syntax keyword glConstant GLUT_KEY_RIGHT
-  syntax keyword glConstant GLUT_KEY_DOWN
-  syntax keyword glConstant GLUT_KEY_PAGE_UP
-  syntax keyword glConstant GLUT_KEY_PAGE_DOWN
   syntax keyword glConstant GLUT_KEY_HOME
-  syntax keyword glConstant GLUT_KEY_END
   syntax keyword glConstant GLUT_KEY_INSERT
+  syntax keyword glConstant GLUT_KEY_LEFT
+  syntax keyword glConstant GLUT_KEY_NUM_LOCK
+  syntax keyword glConstant GLUT_KEY_PAGE_DOWN
+  syntax keyword glConstant GLUT_KEY_PAGE_UP
+  syntax keyword glConstant GLUT_KEY_REPEAT_DEFAULT
+  syntax keyword glConstant GLUT_KEY_REPEAT_OFF
+  syntax keyword glConstant GLUT_KEY_REPEAT_ON
+  syntax keyword glConstant GLUT_KEY_RIGHT
+  syntax keyword glConstant GLUT_KEY_SHIFT_L
+  syntax keyword glConstant GLUT_KEY_SHIFT_R
+  syntax keyword glConstant GLUT_KEY_UP
+  syntax keyword glConstant GLUT_LAYER_IN_USE
   syntax keyword glConstant GLUT_LEFT
-  syntax keyword glConstant GLUT_ENTERED
-  syntax keyword glConstant GLUT_MENU_NOT_IN_USE
+  syntax keyword glConstant GLUT_LEFT_BUTTON
+  syntax keyword glConstant GLUT_LUMINANCE
   syntax keyword glConstant GLUT_MENU_IN_USE
+  syntax keyword glConstant GLUT_MENU_NOT_IN_USE
+  syntax keyword glConstant GLUT_MENU_NUM_ITEMS
+  syntax keyword glConstant GLUT_MIDDLE_BUTTON
+  syntax keyword glConstant GLUT_MULTISAMPLE
+  syntax keyword glConstant GLUT_NORMAL
+  syntax keyword glConstant GLUT_NORMAL_DAMAGED
   syntax keyword glConstant GLUT_NOT_VISIBLE
-  syntax keyword glConstant GLUT_VISIBLE
-  syntax keyword glConstant GLUT_HIDDEN
-  syntax keyword glConstant GLUT_FULLY_RETAINED
+  syntax keyword glConstant GLUT_NUM_BUTTON_BOX_BUTTONS
+  syntax keyword glConstant GLUT_NUM_DIALS
+  syntax keyword glConstant GLUT_NUM_MOUSE_BUTTONS
+  syntax keyword glConstant GLUT_NUM_SPACEBALL_BUTTONS
+  syntax keyword glConstant GLUT_NUM_TABLET_BUTTONS
+  syntax keyword glConstant GLUT_OVERLAY
+  syntax keyword glConstant GLUT_OVERLAY_DAMAGED
+  syntax keyword glConstant GLUT_OVERLAY_POSSIBLE
+  syntax keyword glConstant GLUT_OWNS_JOYSTICK
   syntax keyword glConstant GLUT_PARTIALLY_RETAINED
-  syntax keyword glConstant GLUT_FULLY_COVERED
   syntax keyword glConstant GLUT_RED
-  syntax keyword glConstant GLUT_GREEN
-  syntax keyword glConstant GLUT_BLUE
-  syntax keyword glConstant GLUT_NORMAL
-  syntax keyword glConstant GLUT_OVERLAY
-  syntax keyword glConstant GLUT_STROKE_ROMAN
+  syntax keyword glConstant GLUT_RENDERING_CONTEXT
+  syntax keyword glConstant GLUT_RGB
+  syntax keyword glConstant GLUT_RGBA
+  syntax keyword glConstant GLUT_RIGHT_BUTTON
+  syntax keyword glConstant GLUT_SCREEN_HEIGHT
+  syntax keyword glConstant GLUT_SCREEN_HEIGHT_MM
+  syntax keyword glConstant GLUT_SCREEN_WIDTH
+  syntax keyword glConstant GLUT_SCREEN_WIDTH_MM
+  syntax keyword glConstant GLUT_SINGLE
+  syntax keyword glConstant GLUT_SKIP_STALE_MOTION_EVENTS
+  syntax keyword glConstant GLUT_SRGB
+  syntax keyword glConstant GLUT_STENCIL
+  syntax keyword glConstant GLUT_STEREO
   syntax keyword glConstant GLUT_STROKE_MONO_ROMAN
-  syntax keyword glConstant GLUT_BITMAP_9_BY_15
-  syntax keyword glConstant GLUT_BITMAP_8_BY_13
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
-  syntax keyword glConstant GLUT_STROKE_ROMAN
   syntax keyword glConstant GLUT_STROKE_MONO_ROMAN
-  syntax keyword glConstant GLUT_BITMAP_9_BY_15
-  syntax keyword glConstant GLUT_BITMAP_8_BY_13
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
-  syntax keyword glConstant GLUT_WINDOW_X
-  syntax keyword glConstant GLUT_WINDOW_Y
-  syntax keyword glConstant GLUT_WINDOW_WIDTH
-  syntax keyword glConstant GLUT_WINDOW_HEIGHT
+  syntax keyword glConstant GLUT_STROKE_ROMAN
+  syntax keyword glConstant GLUT_STROKE_ROMAN
+  syntax keyword glConstant GLUT_TRANSPARENT_INDEX
+  syntax keyword glConstant GLUT_TRY_DIRECT_CONTEXT
+  syntax keyword glConstant GLUT_UP
+  syntax keyword glConstant GLUT_USE_CURRENT_CONTEXT
+  syntax keyword glConstant GLUT_VERSION
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT_DELTA
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_IN_USE
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_POSSIBLE
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH_DELTA
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_X
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_X_DELTA
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y_DELTA
+  syntax keyword glConstant GLUT_VISIBLE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_ALPHA_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_BLUE_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_GREEN_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_RED_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ALPHA_SIZE
+  syntax keyword glConstant GLUT_WINDOW_BLUE_SIZE
+  syntax keyword glConstant GLUT_WINDOW_BORDER_HEIGHT
+  syntax keyword glConstant GLUT_WINDOW_BORDER_WIDTH
   syntax keyword glConstant GLUT_WINDOW_BUFFER_SIZE
-  syntax keyword glConstant GLUT_WINDOW_STENCIL_SIZE
+  syntax keyword glConstant GLUT_WINDOW_COLORMAP_SIZE
+  syntax keyword glConstant GLUT_WINDOW_CURSOR
   syntax keyword glConstant GLUT_WINDOW_DEPTH_SIZE
-  syntax keyword glConstant GLUT_WINDOW_RED_SIZE
-  syntax keyword glConstant GLUT_WINDOW_GREEN_SIZE
-  syntax keyword glConstant GLUT_WINDOW_BLUE_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ALPHA_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_RED_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_GREEN_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_BLUE_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_ALPHA_SIZE
   syntax keyword glConstant GLUT_WINDOW_DOUBLEBUFFER
-  syntax keyword glConstant GLUT_WINDOW_RGBA
-  syntax keyword glConstant GLUT_WINDOW_PARENT
+  syntax keyword glConstant GLUT_WINDOW_FORMAT_ID
+  syntax keyword glConstant GLUT_WINDOW_GREEN_SIZE
+  syntax keyword glConstant GLUT_WINDOW_HEADER_HEIGHT
+  syntax keyword glConstant GLUT_WINDOW_HEIGHT
   syntax keyword glConstant GLUT_WINDOW_NUM_CHILDREN
-  syntax keyword glConstant GLUT_WINDOW_COLORMAP_SIZE
   syntax keyword glConstant GLUT_WINDOW_NUM_SAMPLES
+  syntax keyword glConstant GLUT_WINDOW_PARENT
+  syntax keyword glConstant GLUT_WINDOW_RED_SIZE
+  syntax keyword glConstant GLUT_WINDOW_RGBA
+  syntax keyword glConstant GLUT_WINDOW_STENCIL_SIZE
   syntax keyword glConstant GLUT_WINDOW_STEREO
-  syntax keyword glConstant GLUT_WINDOW_CURSOR
-  syntax keyword glConstant GLUT_SCREEN_WIDTH
-  syntax keyword glConstant GLUT_SCREEN_HEIGHT
-  syntax keyword glConstant GLUT_SCREEN_WIDTH_MM
-  syntax keyword glConstant GLUT_SCREEN_HEIGHT_MM
-  syntax keyword glConstant GLUT_MENU_NUM_ITEMS
-  syntax keyword glConstant GLUT_DISPLAY_MODE_POSSIBLE
-  syntax keyword glConstant GLUT_INIT_WINDOW_X
-  syntax keyword glConstant GLUT_INIT_WINDOW_Y
-  syntax keyword glConstant GLUT_INIT_WINDOW_WIDTH
-  syntax keyword glConstant GLUT_INIT_WINDOW_HEIGHT
-  syntax keyword glConstant GLUT_INIT_DISPLAY_MODE
-  syntax keyword glConstant GLUT_ELAPSED_TIME
-  syntax keyword glConstant GLUT_WINDOW_FORMAT_ID
-  syntax keyword glConstant GLUT_HAS_KEYBOARD
-  syntax keyword glConstant GLUT_HAS_MOUSE
-  syntax keyword glConstant GLUT_HAS_SPACEBALL
-  syntax keyword glConstant GLUT_HAS_DIAL_AND_BUTTON_BOX
-  syntax keyword glConstant GLUT_HAS_TABLET
-  syntax keyword glConstant GLUT_NUM_MOUSE_BUTTONS
-  syntax keyword glConstant GLUT_NUM_SPACEBALL_BUTTONS
-  syntax keyword glConstant GLUT_NUM_BUTTON_BOX_BUTTONS
-  syntax keyword glConstant GLUT_NUM_DIALS
-  syntax keyword glConstant GLUT_NUM_TABLET_BUTTONS
-  syntax keyword glConstant GLUT_DEVICE_IGNORE_KEY_REPEAT
-  syntax keyword glConstant GLUT_DEVICE_KEY_REPEAT
-  syntax keyword glConstant GLUT_HAS_JOYSTICK
-  syntax keyword glConstant GLUT_OWNS_JOYSTICK
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTONS
-  syntax keyword glConstant GLUT_JOYSTICK_AXES
-  syntax keyword glConstant GLUT_JOYSTICK_POLL_RATE
-  syntax keyword glConstant GLUT_OVERLAY_POSSIBLE
-  syntax keyword glConstant GLUT_LAYER_IN_USE
-  syntax keyword glConstant GLUT_HAS_OVERLAY
-  syntax keyword glConstant GLUT_TRANSPARENT_INDEX
-  syntax keyword glConstant GLUT_NORMAL_DAMAGED
-  syntax keyword glConstant GLUT_OVERLAY_DAMAGED
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_POSSIBLE
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_IN_USE
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_X_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_X
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT
-  syntax keyword glConstant GLUT_NORMAL
-  syntax keyword glConstant GLUT_OVERLAY
-  syntax keyword glConstant GLUT_ACTIVE_SHIFT
-  syntax keyword glConstant GLUT_ACTIVE_CTRL
-  syntax keyword glConstant GLUT_ACTIVE_ALT
-  syntax keyword glConstant GLUT_CURSOR_RIGHT_ARROW
-  syntax keyword glConstant GLUT_CURSOR_LEFT_ARROW
-  syntax keyword glConstant GLUT_CURSOR_INFO
-  syntax keyword glConstant GLUT_CURSOR_DESTROY
-  syntax keyword glConstant GLUT_CURSOR_HELP
-  syntax keyword glConstant GLUT_CURSOR_CYCLE
-  syntax keyword glConstant GLUT_CURSOR_SPRAY
-  syntax keyword glConstant GLUT_CURSOR_WAIT
-  syntax keyword glConstant GLUT_CURSOR_TEXT
-  syntax keyword glConstant GLUT_CURSOR_CROSSHAIR
-  syntax keyword glConstant GLUT_CURSOR_UP_DOWN
-  syntax keyword glConstant GLUT_CURSOR_LEFT_RIGHT
-  syntax keyword glConstant GLUT_CURSOR_TOP_SIDE
-  syntax keyword glConstant GLUT_CURSOR_BOTTOM_SIDE
-  syntax keyword glConstant GLUT_CURSOR_LEFT_SIDE
-  syntax keyword glConstant GLUT_CURSOR_RIGHT_SIDE
-  syntax keyword glConstant GLUT_CURSOR_TOP_LEFT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_TOP_RIGHT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_BOTTOM_RIGHT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_BOTTOM_LEFT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_INHERIT
-  syntax keyword glConstant GLUT_CURSOR_NONE
-  syntax keyword glConstant GLUT_CURSOR_FULL_CROSSHAIR
-  syntax keyword glConstant GLUT_KEY_REPEAT_OFF
-  syntax keyword glConstant GLUT_KEY_REPEAT_ON
-  syntax keyword glConstant GLUT_KEY_REPEAT_DEFAULT
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_A
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_B
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_C
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_D
-  syntax keyword glConstant GLUT_GAME_MODE_ACTIVE
-  syntax keyword glConstant GLUT_GAME_MODE_POSSIBLE
-  syntax keyword glConstant GLUT_GAME_MODE_WIDTH 
-  syntax keyword glConstant GLUT_GAME_MODE_HEIGHT
-  syntax keyword glConstant GLUT_GAME_MODE_PIXEL_DEPTH
-  syntax keyword glConstant GLUT_GAME_MODE_REFRESH_RATE
-  syntax keyword glConstant GLUT_GAME_MODE_DISPLAY_CHANGED
+  syntax keyword glConstant GLUT_WINDOW_WIDTH
+  syntax keyword glConstant GLUT_WINDOW_X
+  syntax keyword glConstant GLUT_WINDOW_Y
+  syntax keyword glConstant GLUT_XLIB_IMPLEMENTATION
   " }}}
 
   " Functions {{{
-  syntax keyword glFunction  glutInit
-  syntax keyword glFunction  glutInitDisplayMode
-  syntax keyword glFunction  glutInitDisplayString
-  syntax keyword glFunction  glutInitWindowPosition
-  syntax keyword glFunction  glutInitWindowSize
-  syntax keyword glFunction  glutMainLoop
-  syntax keyword glFunction  glutCreateWindow
-  syntax keyword glFunction  glutCreateSubWindow
-  syntax keyword glFunction  glutDestroyWindow
-  syntax keyword glFunction  glutPostRedisplay
-  syntax keyword glFunction  glutPostWindowRedisplay
-  syntax keyword glFunction  glutSwapBuffers
-  syntax keyword glFunction  glutGetWindow
-  syntax keyword glFunction  glutSetWindow
-  syntax keyword glFunction  glutSetWindowTitle
-  syntax keyword glFunction  glutSetIconTitle
-  syntax keyword glFunction  glutPositionWindow
-  syntax keyword glFunction  glutReshapeWindow
-  syntax keyword glFunction  glutPopWindow
-  syntax keyword glFunction  glutPushWindow
-  syntax keyword glFunction  glutIconifyWindow
-  syntax keyword glFunction  glutShowWindow
-  syntax keyword glFunction  glutHideWindow
-  syntax keyword glFunction  glutFullScreen
-  syntax keyword glFunction  glutSetCursor
-  syntax keyword glFunction  glutWarpPointer
-  syntax keyword glFunction  glutEstablishOverlay
-  syntax keyword glFunction  glutRemoveOverlay
-  syntax keyword glFunction  glutUseLayer
-  syntax keyword glFunction  glutPostOverlayRedisplay
-  syntax keyword glFunction  glutPostWindowOverlayRedisplay
-  syntax keyword glFunction  glutShowOverlay
-  syntax keyword glFunction  glutHideOverlay
-  syntax keyword glFunction  glutDestroyMenu
-  syntax keyword glFunction  glutGetMenu
-  syntax keyword glFunction  glutSetMenu
-  syntax keyword glFunction  glutAddMenuEntry
-  syntax keyword glFunction  glutAddSubMenu
-  syntax keyword glFunction  glutChangeToMenuEntry
-  syntax keyword glFunction  glutChangeToSubMenu
-  syntax keyword glFunction  glutRemoveMenuItem
-  syntax keyword glFunction  glutAttachMenu
-  syntax keyword glFunction  glutDetachMenu
-  syntax keyword glFunction  glutDisplayFunc
-  syntax keyword glFunction  glutReshapeFunc
-  syntax keyword glFunction  glutKeyboardFunc
-  syntax keyword glFunction  glutMouseFunc
-  syntax keyword glFunction  glutMotionFunc
-  syntax keyword glFunction  glutPassiveMotionFunc
-  syntax keyword glFunction  glutEntryFunc
-  syntax keyword glFunction  glutVisibilityFunc
-  syntax keyword glFunction  glutIdleFunc
-  syntax keyword glFunction  glutTimerFunc
-  syntax keyword glFunction  glutMenuStateFunc
-  syntax keyword glFunction  glutSpecialFunc
-  syntax keyword glFunction  glutSpaceballMotionFunc
-  syntax keyword glFunction  glutSpaceballRotateFunc
-  syntax keyword glFunction  glutSpaceballButtonFunc
-  syntax keyword glFunction  glutButtonBoxFunc
-  syntax keyword glFunction  glutDialsFunc
-  syntax keyword glFunction  glutTabletMotionFunc
-  syntax keyword glFunction  glutTabletButtonFunc
-  syntax keyword glFunction  glutMenuStatusFunc
-  syntax keyword glFunction  glutOverlayDisplayFunc
-  syntax keyword glFunction  glutWindowStatusFunc
-  syntax keyword glFunction  glutKeyboardUpFunc
-  syntax keyword glFunction  glutSpecialUpFunc
-  syntax keyword glFunction  glutJoystickFunc
-  syntax keyword glFunction  glutSetColor
-  syntax keyword glFunction  glutGetColor
-  syntax keyword glFunction  glutCopyColormap
-  syntax keyword glFunction  glutGet
-  syntax keyword glFunction  glutDeviceGet
-  syntax keyword glFunction  glutGetModifiers
-  syntax keyword glFunction  glutLayerGet
-  syntax keyword glFunction  glutGetProcAddress
-  syntax keyword glFunction  glutBitmapCharacter
-  syntax keyword glFunction  glutBitmapWidth
-  syntax keyword glFunction  glutStrokeCharacter
-  syntax keyword glFunction  glutStrokeWidth
-  syntax keyword glFunction  glutBitmapLength
-  syntax keyword glFunction  glutStrokeLength
-  syntax keyword glFunction  glutWireSphere
-  syntax keyword glFunction  glutSolidSphere
-  syntax keyword glFunction  glutWireCone
-  syntax keyword glFunction  glutSolidCone
-  syntax keyword glFunction  glutWireCube
-  syntax keyword glFunction  glutSolidCube
-  syntax keyword glFunction  glutWireTorus
-  syntax keyword glFunction  glutSolidTorus
-  syntax keyword glFunction  glutWireDodecahedron
-  syntax keyword glFunction  glutSolidDodecahedron
-  syntax keyword glFunction  glutWireTeapot
-  syntax keyword glFunction  glutSolidTeapot
-  syntax keyword glFunction  glutWireOctahedron
-  syntax keyword glFunction  glutSolidOctahedron
-  syntax keyword glFunction  glutWireTetrahedron
-  syntax keyword glFunction  glutSolidTetrahedron
-  syntax keyword glFunction  glutWireIcosahedron
-  syntax keyword glFunction  glutSolidIcosahedron
-  syntax keyword glFunction  glutVideoResizeGet
-  syntax keyword glFunction  glutSetupVideoResizing
-  syntax keyword glFunction  glutStopVideoResizing
-  syntax keyword glFunction  glutVideoResize
-  syntax keyword glFunction  glutVideoPan
-  syntax keyword glFunction  glutReportErrors
-  syntax keyword glFunction  glutIgnoreKeyRepeat
-  syntax keyword glFunction  glutSetKeyRepeat
-  syntax keyword glFunction  glutForceJoystickFunc
-  syntax keyword glFunction  glutGameModeString
-  syntax keyword glFunction  glutEnterGameMode
-  syntax keyword glFunction  glutLeaveGameMode
-  syntax keyword glFunction  glutGameModeGet
+  syntax keyword glFunction glutAddMenuEntry
+  syntax keyword glFunction glutAddSubMenu
+  syntax keyword glFunction glutAttachMenu
+  syntax keyword glFunction glutBitmapCharacter
+  syntax keyword glFunction glutBitmapHeight
+  syntax keyword glFunction glutBitmapLength
+  syntax keyword glFunction glutBitmapString
+  syntax keyword glFunction glutBitmapWidth
+  syntax keyword glFunction glutButtonBoxFunc
+  syntax keyword glFunction glutChangeToMenuEntry
+  syntax keyword glFunction glutChangeToSubMenu
+  syntax keyword glFunction glutCloseFunc
+  syntax keyword glFunction glutCopyColormap
+  syntax keyword glFunction glutCreateMenu
+  syntax keyword glFunction glutCreateSubWindow
+  syntax keyword glFunction glutCreateWindow
+  syntax keyword glFunction glutDestroyMenu
+  syntax keyword glFunction glutDestroyWindow
+  syntax keyword glFunction glutDetachMenu
+  syntax keyword glFunction glutDeviceGet
+  syntax keyword glFunction glutDialsFunc
+  syntax keyword glFunction glutDisplayFunc
+  syntax keyword glFunction glutEnterGameMode
+  syntax keyword glFunction glutEntryFunc
+  syntax keyword glFunction glutEstablishOverlay
+  syntax keyword glFunction glutExit
+  syntax keyword glFunction glutExtensionSupported
+  syntax keyword glFunction glutForceJoystickFunc
+  syntax keyword glFunction glutFullScreen
+  syntax keyword glFunction glutFullScreenToggle
+  syntax keyword glFunction glutGameModeGet
+  syntax keyword glFunction glutGameModeString
+  syntax keyword glFunction glutGet
+  syntax keyword glFunction glutGetColor
+  syntax keyword glFunction glutGetMenu
+  syntax keyword glFunction glutGetMenuData
+  syntax keyword glFunction glutGetModeValues
+  syntax keyword glFunction glutGetModifiers
+  syntax keyword glFunction glutGetProcAddress
+  syntax keyword glFunction glutGetWindow
+  syntax keyword glFunction glutGetWindowData
+  syntax keyword glFunction glutHideOverlay
+  syntax keyword glFunction glutHideWindow
+  syntax keyword glFunction glutIconifyWindow
+  syntax keyword glFunction glutIdleFunc
+  syntax keyword glFunction glutIgnoreKeyRepeat
+  syntax keyword glFunction glutInit
+  syntax keyword glFunction glutInitContextFlags
+  syntax keyword glFunction glutInitContextProfile
+  syntax keyword glFunction glutInitContextVersion
+  syntax keyword glFunction glutInitDisplayMode
+  syntax keyword glFunction glutInitDisplayString
+  syntax keyword glFunction glutInitErrorFunc
+  syntax keyword glFunction glutInitWarningFunc
+  syntax keyword glFunction glutInitWindowPosition
+  syntax keyword glFunction glutInitWindowSize
+  syntax keyword glFunction glutJoystickFunc
+  syntax keyword glFunction glutKeyboardFunc
+  syntax keyword glFunction glutKeyboardUpFunc
+  syntax keyword glFunction glutLayerGet
+  syntax keyword glFunction glutLeaveFullScreen
+  syntax keyword glFunction glutLeaveGameMode
+  syntax keyword glFunction glutLeaveMainLoop
+  syntax keyword glFunction glutMainLoop
+  syntax keyword glFunction glutMainLoopEvent
+  syntax keyword glFunction glutMenuDestroyFunc
+  syntax keyword glFunction glutMenuStateFunc
+  syntax keyword glFunction glutMenuStatusFunc
+  syntax keyword glFunction glutMotionFunc
+  syntax keyword glFunction glutMouseFunc
+  syntax keyword glFunction glutMouseWheelFunc
+  syntax keyword glFunction glutMultiButtonFunc
+  syntax keyword glFunction glutMultiEntryFunc
+  syntax keyword glFunction glutMultiMotionFunc
+  syntax keyword glFunction glutMultiPassiveFunc
+  syntax keyword glFunction glutOverlayDisplayFunc
+  syntax keyword glFunction glutPassiveMotionFunc
+  syntax keyword glFunction glutPopWindow
+  syntax keyword glFunction glutPositionWindow
+  syntax keyword glFunction glutPostOverlayRedisplay
+  syntax keyword glFunction glutPostRedisplay
+  syntax keyword glFunction glutPostWindowOverlayRedisplay
+  syntax keyword glFunction glutPostWindowRedisplay
+  syntax keyword glFunction glutPushWindow
+  syntax keyword glFunction glutRemoveMenuItem
+  syntax keyword glFunction glutRemoveOverlay
+  syntax keyword glFunction glutReportErrors
+  syntax keyword glFunction glutReshapeFunc
+  syntax keyword glFunction glutReshapeWindow
+  syntax keyword glFunction glutSetColor
+  syntax keyword glFunction glutSetCursor
+  syntax keyword glFunction glutSetIconTitle
+  syntax keyword glFunction glutSetKeyRepeat
+  syntax keyword glFunction glutSetMenu
+  syntax keyword glFunction glutSetMenuData
+  syntax keyword glFunction glutSetOption
+  syntax keyword glFunction glutSetWindow
+  syntax keyword glFunction glutSetWindowData
+  syntax keyword glFunction glutSetWindowTitle
+  syntax keyword glFunction glutSetupVideoResizing
+  syntax keyword glFunction glutShowOverlay
+  syntax keyword glFunction glutShowWindow
+  syntax keyword glFunction glutSolidCone
+  syntax keyword glFunction glutSolidCube
+  syntax keyword glFunction glutSolidCylinder
+  syntax keyword glFunction glutSolidDodecahedron
+  syntax keyword glFunction glutSolidIcosahedron
+  syntax keyword glFunction glutSolidOctahedron
+  syntax keyword glFunction glutSolidRhombicDodecahedron
+  syntax keyword glFunction glutSolidSierpinskiSponge
+  syntax keyword glFunction glutSolidSphere
+  syntax keyword glFunction glutSolidTeapot
+  syntax keyword glFunction glutSolidTetrahedron
+  syntax keyword glFunction glutSolidTorus
+  syntax keyword glFunction glutSpaceballButtonFunc
+  syntax keyword glFunction glutSpaceballMotionFunc
+  syntax keyword glFunction glutSpaceballRotateFunc
+  syntax keyword glFunction glutSpecialFunc
+  syntax keyword glFunction glutSpecialUpFunc
+  syntax keyword glFunction glutStopVideoResizing
+  syntax keyword glFunction glutStrokeCharacter
+  syntax keyword glFunction glutStrokeHeight
+  syntax keyword glFunction glutStrokeLength
+  syntax keyword glFunction glutStrokeString
+  syntax keyword glFunction glutStrokeWidth
+  syntax keyword glFunction glutSwapBuffers
+  syntax keyword glFunction glutTabletButtonFunc
+  syntax keyword glFunction glutTabletMotionFunc
+  syntax keyword glFunction glutTimerFunc
+  syntax keyword glFunction glutUseLayer
+  syntax keyword glFunction glutVideoPan
+  syntax keyword glFunction glutVideoResize
+  syntax keyword glFunction glutVideoResizeGet
+  syntax keyword glFunction glutVisibilityFunc
+  syntax keyword glFunction glutWMCloseFunc
+  syntax keyword glFunction glutWarpPointer
+  syntax keyword glFunction glutWindowStatusFunc
+  syntax keyword glFunction glutWireCone
+  syntax keyword glFunction glutWireCube
+  syntax keyword glFunction glutWireCylinder
+  syntax keyword glFunction glutWireDodecahedron
+  syntax keyword glFunction glutWireIcosahedron
+  syntax keyword glFunction glutWireOctahedron
+  syntax keyword glFunction glutWireRhombicDodecahedron
+  syntax keyword glFunction glutWireSierpinskiSponge
+  syntax keyword glFunction glutWireSphere
+  syntax keyword glFunction glutWireTeapot
+  syntax keyword glFunction glutWireTetrahedron
+  syntax keyword glFunction glutWireTorus
   " }}}
 " }}}
 endif
diff --git a/after/syntax/cpp/opengl.vim b/after/syntax/cpp/opengl.vim
index 0aad54a..8104e7a 100644
--- a/after/syntax/cpp/opengl.vim
+++ b/after/syntax/cpp/opengl.vim
@@ -10,6 +10,9 @@
 "   Source it from somewhere
 "
 " Changelog: 
+"   2013-04-24
+"       * Update GLUT support for Freeglut 2.8.1 [Released: 5 April 2013]
+"
 "   2012-11-17
 "       * Updated to OpenGL 4.3 specification.
 "       * OpenGL 4.3 functions and tokens organized by extension
@@ -4134,24 +4137,128 @@ endif
 if !exists ("c_opengl_no_glut")
 " GLUT {{{
   " Constants {{{
-  syntax keyword glConstant GLUT_RGB
-  syntax keyword glConstant GLUT_RGBA
-  syntax keyword glConstant GLUT_INDEX
-  syntax keyword glConstant GLUT_SINGLE
-  syntax keyword glConstant GLUT_DOUBLE
   syntax keyword glConstant GLUT_ACCUM
+  syntax keyword glConstant GLUT_ACTION_CONTINUE_EXECUTION
+  syntax keyword glConstant GLUT_ACTION_EXIT
+  syntax keyword glConstant GLUT_ACTION_GLUTMAINLOOP_RETURNS
+  syntax keyword glConstant GLUT_ACTION_ON_WINDOW_CLOSE
+  syntax keyword glConstant GLUT_ACTIVE_ALT
+  syntax keyword glConstant GLUT_ACTIVE_CTRL
+  syntax keyword glConstant GLUT_ACTIVE_SHIFT
+  syntax keyword glConstant GLUT_ALLOW_DIRECT_CONTEXT
   syntax keyword glConstant GLUT_ALPHA
+  syntax keyword glConstant GLUT_API_VERSION
+  syntax keyword glConstant GLUT_AUX
+  syntax keyword glConstant GLUT_AUX1
+  syntax keyword glConstant GLUT_AUX2
+  syntax keyword glConstant GLUT_AUX3
+  syntax keyword glConstant GLUT_AUX4
+  syntax keyword glConstant GLUT_BITMAP_8_BY_13
+  syntax keyword glConstant GLUT_BITMAP_8_BY_13
+  syntax keyword glConstant GLUT_BITMAP_9_BY_15
+  syntax keyword glConstant GLUT_BITMAP_9_BY_15
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
+  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
+  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
+  syntax keyword glConstant GLUT_BLUE
+  syntax keyword glConstant GLUT_BORDERLESS
+  syntax keyword glConstant GLUT_CAPTIONLESS
+  syntax keyword glConstant GLUT_COMPATIBILITY_PROFILE
+  syntax keyword glConstant GLUT_CORE_PROFILE
+  syntax keyword glConstant GLUT_CREATE_NEW_CONTEXT
+  syntax keyword glConstant GLUT_CURSOR_BOTTOM_LEFT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_BOTTOM_RIGHT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_BOTTOM_SIDE
+  syntax keyword glConstant GLUT_CURSOR_CROSSHAIR
+  syntax keyword glConstant GLUT_CURSOR_CYCLE
+  syntax keyword glConstant GLUT_CURSOR_DESTROY
+  syntax keyword glConstant GLUT_CURSOR_FULL_CROSSHAIR
+  syntax keyword glConstant GLUT_CURSOR_HELP
+  syntax keyword glConstant GLUT_CURSOR_INFO
+  syntax keyword glConstant GLUT_CURSOR_INHERIT
+  syntax keyword glConstant GLUT_CURSOR_LEFT_ARROW
+  syntax keyword glConstant GLUT_CURSOR_LEFT_RIGHT
+  syntax keyword glConstant GLUT_CURSOR_LEFT_SIDE
+  syntax keyword glConstant GLUT_CURSOR_NONE
+  syntax keyword glConstant GLUT_CURSOR_RIGHT_ARROW
+  syntax keyword glConstant GLUT_CURSOR_RIGHT_SIDE
+  syntax keyword glConstant GLUT_CURSOR_SPRAY
+  syntax keyword glConstant GLUT_CURSOR_TEXT
+  syntax keyword glConstant GLUT_CURSOR_TOP_LEFT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_TOP_RIGHT_CORNER
+  syntax keyword glConstant GLUT_CURSOR_TOP_SIDE
+  syntax keyword glConstant GLUT_CURSOR_UP_DOWN
+  syntax keyword glConstant GLUT_CURSOR_WAIT
+  syntax keyword glConstant GLUT_DEBUG
   syntax keyword glConstant GLUT_DEPTH
-  syntax keyword glConstant GLUT_STENCIL
-  syntax keyword glConstant GLUT_MULTISAMPLE
-  syntax keyword glConstant GLUT_STEREO
-  syntax keyword glConstant GLUT_LUMINANCE
-  syntax keyword glConstant GLUT_LEFT_BUTTON
-  syntax keyword glConstant GLUT_MIDDLE_BUTTON
-  syntax keyword glConstant GLUT_RIGHT_BUTTON
+  syntax keyword glConstant GLUT_DEVICE_IGNORE_KEY_REPEAT
+  syntax keyword glConstant GLUT_DEVICE_KEY_REPEAT
+  syntax keyword glConstant GLUT_DIRECT_RENDERING
+  syntax keyword glConstant GLUT_DISPLAY_MODE_POSSIBLE
+  syntax keyword glConstant GLUT_DOUBLE
   syntax keyword glConstant GLUT_DOWN
-  syntax keyword glConstant GLUT_UP
+  syntax keyword glConstant GLUT_ELAPSED_TIME
+  syntax keyword glConstant GLUT_ENTERED
+  syntax keyword glConstant GLUT_FORCE_DIRECT_CONTEXT
+  syntax keyword glConstant GLUT_FORCE_INDIRECT_CONTEXT
+  syntax keyword glConstant GLUT_FORWARD_COMPATIBLE
+  syntax keyword glConstant GLUT_FULLY_COVERED
+  syntax keyword glConstant GLUT_FULLY_RETAINED
+  syntax keyword glConstant GLUT_FULL_SCREEN
+  syntax keyword glConstant GLUT_GAME_MODE_ACTIVE
+  syntax keyword glConstant GLUT_GAME_MODE_DISPLAY_CHANGED
+  syntax keyword glConstant GLUT_GAME_MODE_HEIGHT
+  syntax keyword glConstant GLUT_GAME_MODE_PIXEL_DEPTH
+  syntax keyword glConstant GLUT_GAME_MODE_POSSIBLE
+  syntax keyword glConstant GLUT_GAME_MODE_REFRESH_RATE
+  syntax keyword glConstant GLUT_GAME_MODE_WIDTH
+  syntax keyword glConstant GLUT_GREEN
+  syntax keyword glConstant GLUT_HAS_DIAL_AND_BUTTON_BOX
+  syntax keyword glConstant GLUT_HAS_JOYSTICK
+  syntax keyword glConstant GLUT_HAS_KEYBOARD
+  syntax keyword glConstant GLUT_HAS_MOUSE
+  syntax keyword glConstant GLUT_HAS_MULTI
+  syntax keyword glConstant GLUT_HAS_OVERLAY
+  syntax keyword glConstant GLUT_HAS_SPACEBALL
+  syntax keyword glConstant GLUT_HAS_TABLET
+  syntax keyword glConstant GLUT_HIDDEN
+  syntax keyword glConstant GLUT_INDEX
+  syntax keyword glConstant GLUT_INIT_DISPLAY_MODE
+  syntax keyword glConstant GLUT_INIT_FLAGS
+  syntax keyword glConstant GLUT_INIT_MAJOR_VERSION
+  syntax keyword glConstant GLUT_INIT_MINOR_VERSION
+  syntax keyword glConstant GLUT_INIT_PROFILE
+  syntax keyword glConstant GLUT_INIT_STATE
+  syntax keyword glConstant GLUT_INIT_WINDOW_HEIGHT
+  syntax keyword glConstant GLUT_INIT_WINDOW_WIDTH
+  syntax keyword glConstant GLUT_INIT_WINDOW_X
+  syntax keyword glConstant GLUT_INIT_WINDOW_Y
+  syntax keyword glConstant GLUT_JOYSTICK_AXES
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTONS
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_A
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_B
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_C
+  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_D
+  syntax keyword glConstant GLUT_JOYSTICK_POLL_RATE
+  syntax keyword glConstant GLUT_KEY_ALT_L
+  syntax keyword glConstant GLUT_KEY_ALT_R
+  syntax keyword glConstant GLUT_KEY_BEGIN
+  syntax keyword glConstant GLUT_KEY_CTRL_L
+  syntax keyword glConstant GLUT_KEY_CTRL_R
+  syntax keyword glConstant GLUT_KEY_DELETE
+  syntax keyword glConstant GLUT_KEY_DOWN
+  syntax keyword glConstant GLUT_KEY_END
   syntax keyword glConstant GLUT_KEY_F1
+  syntax keyword glConstant GLUT_KEY_F10
+  syntax keyword glConstant GLUT_KEY_F11
+  syntax keyword glConstant GLUT_KEY_F12
   syntax keyword glConstant GLUT_KEY_F2
   syntax keyword glConstant GLUT_KEY_F3
   syntax keyword glConstant GLUT_KEY_F4
@@ -4160,278 +4267,255 @@ if !exists ("c_opengl_no_glut")
   syntax keyword glConstant GLUT_KEY_F7
   syntax keyword glConstant GLUT_KEY_F8
   syntax keyword glConstant GLUT_KEY_F9
-  syntax keyword glConstant GLUT_KEY_F10
-  syntax keyword glConstant GLUT_KEY_F11
-  syntax keyword glConstant GLUT_KEY_F12
-  syntax keyword glConstant GLUT_KEY_LEFT
-  syntax keyword glConstant GLUT_KEY_UP
-  syntax keyword glConstant GLUT_KEY_RIGHT
-  syntax keyword glConstant GLUT_KEY_DOWN
-  syntax keyword glConstant GLUT_KEY_PAGE_UP
-  syntax keyword glConstant GLUT_KEY_PAGE_DOWN
   syntax keyword glConstant GLUT_KEY_HOME
-  syntax keyword glConstant GLUT_KEY_END
   syntax keyword glConstant GLUT_KEY_INSERT
+  syntax keyword glConstant GLUT_KEY_LEFT
+  syntax keyword glConstant GLUT_KEY_NUM_LOCK
+  syntax keyword glConstant GLUT_KEY_PAGE_DOWN
+  syntax keyword glConstant GLUT_KEY_PAGE_UP
+  syntax keyword glConstant GLUT_KEY_REPEAT_DEFAULT
+  syntax keyword glConstant GLUT_KEY_REPEAT_OFF
+  syntax keyword glConstant GLUT_KEY_REPEAT_ON
+  syntax keyword glConstant GLUT_KEY_RIGHT
+  syntax keyword glConstant GLUT_KEY_SHIFT_L
+  syntax keyword glConstant GLUT_KEY_SHIFT_R
+  syntax keyword glConstant GLUT_KEY_UP
+  syntax keyword glConstant GLUT_LAYER_IN_USE
   syntax keyword glConstant GLUT_LEFT
-  syntax keyword glConstant GLUT_ENTERED
-  syntax keyword glConstant GLUT_MENU_NOT_IN_USE
+  syntax keyword glConstant GLUT_LEFT_BUTTON
+  syntax keyword glConstant GLUT_LUMINANCE
   syntax keyword glConstant GLUT_MENU_IN_USE
+  syntax keyword glConstant GLUT_MENU_NOT_IN_USE
+  syntax keyword glConstant GLUT_MENU_NUM_ITEMS
+  syntax keyword glConstant GLUT_MIDDLE_BUTTON
+  syntax keyword glConstant GLUT_MULTISAMPLE
+  syntax keyword glConstant GLUT_NORMAL
+  syntax keyword glConstant GLUT_NORMAL_DAMAGED
   syntax keyword glConstant GLUT_NOT_VISIBLE
-  syntax keyword glConstant GLUT_VISIBLE
-  syntax keyword glConstant GLUT_HIDDEN
-  syntax keyword glConstant GLUT_FULLY_RETAINED
+  syntax keyword glConstant GLUT_NUM_BUTTON_BOX_BUTTONS
+  syntax keyword glConstant GLUT_NUM_DIALS
+  syntax keyword glConstant GLUT_NUM_MOUSE_BUTTONS
+  syntax keyword glConstant GLUT_NUM_SPACEBALL_BUTTONS
+  syntax keyword glConstant GLUT_NUM_TABLET_BUTTONS
+  syntax keyword glConstant GLUT_OVERLAY
+  syntax keyword glConstant GLUT_OVERLAY_DAMAGED
+  syntax keyword glConstant GLUT_OVERLAY_POSSIBLE
+  syntax keyword glConstant GLUT_OWNS_JOYSTICK
   syntax keyword glConstant GLUT_PARTIALLY_RETAINED
-  syntax keyword glConstant GLUT_FULLY_COVERED
   syntax keyword glConstant GLUT_RED
-  syntax keyword glConstant GLUT_GREEN
-  syntax keyword glConstant GLUT_BLUE
-  syntax keyword glConstant GLUT_NORMAL
-  syntax keyword glConstant GLUT_OVERLAY
-  syntax keyword glConstant GLUT_STROKE_ROMAN
+  syntax keyword glConstant GLUT_RENDERING_CONTEXT
+  syntax keyword glConstant GLUT_RGB
+  syntax keyword glConstant GLUT_RGBA
+  syntax keyword glConstant GLUT_RIGHT_BUTTON
+  syntax keyword glConstant GLUT_SCREEN_HEIGHT
+  syntax keyword glConstant GLUT_SCREEN_HEIGHT_MM
+  syntax keyword glConstant GLUT_SCREEN_WIDTH
+  syntax keyword glConstant GLUT_SCREEN_WIDTH_MM
+  syntax keyword glConstant GLUT_SINGLE
+  syntax keyword glConstant GLUT_SKIP_STALE_MOTION_EVENTS
+  syntax keyword glConstant GLUT_SRGB
+  syntax keyword glConstant GLUT_STENCIL
+  syntax keyword glConstant GLUT_STEREO
   syntax keyword glConstant GLUT_STROKE_MONO_ROMAN
-  syntax keyword glConstant GLUT_BITMAP_9_BY_15
-  syntax keyword glConstant GLUT_BITMAP_8_BY_13
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
-  syntax keyword glConstant GLUT_STROKE_ROMAN
   syntax keyword glConstant GLUT_STROKE_MONO_ROMAN
-  syntax keyword glConstant GLUT_BITMAP_9_BY_15
-  syntax keyword glConstant GLUT_BITMAP_8_BY_13
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_10
-  syntax keyword glConstant GLUT_BITMAP_TIMES_ROMAN_24
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_10
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_12
-  syntax keyword glConstant GLUT_BITMAP_HELVETICA_18
-  syntax keyword glConstant GLUT_WINDOW_X
-  syntax keyword glConstant GLUT_WINDOW_Y
-  syntax keyword glConstant GLUT_WINDOW_WIDTH
-  syntax keyword glConstant GLUT_WINDOW_HEIGHT
+  syntax keyword glConstant GLUT_STROKE_ROMAN
+  syntax keyword glConstant GLUT_STROKE_ROMAN
+  syntax keyword glConstant GLUT_TRANSPARENT_INDEX
+  syntax keyword glConstant GLUT_TRY_DIRECT_CONTEXT
+  syntax keyword glConstant GLUT_UP
+  syntax keyword glConstant GLUT_USE_CURRENT_CONTEXT
+  syntax keyword glConstant GLUT_VERSION
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT_DELTA
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_IN_USE
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_POSSIBLE
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH_DELTA
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_X
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_X_DELTA
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y
+  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y_DELTA
+  syntax keyword glConstant GLUT_VISIBLE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_ALPHA_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_BLUE_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_GREEN_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ACCUM_RED_SIZE
+  syntax keyword glConstant GLUT_WINDOW_ALPHA_SIZE
+  syntax keyword glConstant GLUT_WINDOW_BLUE_SIZE
+  syntax keyword glConstant GLUT_WINDOW_BORDER_HEIGHT
+  syntax keyword glConstant GLUT_WINDOW_BORDER_WIDTH
   syntax keyword glConstant GLUT_WINDOW_BUFFER_SIZE
-  syntax keyword glConstant GLUT_WINDOW_STENCIL_SIZE
+  syntax keyword glConstant GLUT_WINDOW_COLORMAP_SIZE
+  syntax keyword glConstant GLUT_WINDOW_CURSOR
   syntax keyword glConstant GLUT_WINDOW_DEPTH_SIZE
-  syntax keyword glConstant GLUT_WINDOW_RED_SIZE
-  syntax keyword glConstant GLUT_WINDOW_GREEN_SIZE
-  syntax keyword glConstant GLUT_WINDOW_BLUE_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ALPHA_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_RED_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_GREEN_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_BLUE_SIZE
-  syntax keyword glConstant GLUT_WINDOW_ACCUM_ALPHA_SIZE
   syntax keyword glConstant GLUT_WINDOW_DOUBLEBUFFER
-  syntax keyword glConstant GLUT_WINDOW_RGBA
-  syntax keyword glConstant GLUT_WINDOW_PARENT
+  syntax keyword glConstant GLUT_WINDOW_FORMAT_ID
+  syntax keyword glConstant GLUT_WINDOW_GREEN_SIZE
+  syntax keyword glConstant GLUT_WINDOW_HEADER_HEIGHT
+  syntax keyword glConstant GLUT_WINDOW_HEIGHT
   syntax keyword glConstant GLUT_WINDOW_NUM_CHILDREN
-  syntax keyword glConstant GLUT_WINDOW_COLORMAP_SIZE
   syntax keyword glConstant GLUT_WINDOW_NUM_SAMPLES
+  syntax keyword glConstant GLUT_WINDOW_PARENT
+  syntax keyword glConstant GLUT_WINDOW_RED_SIZE
+  syntax keyword glConstant GLUT_WINDOW_RGBA
+  syntax keyword glConstant GLUT_WINDOW_STENCIL_SIZE
   syntax keyword glConstant GLUT_WINDOW_STEREO
-  syntax keyword glConstant GLUT_WINDOW_CURSOR
-  syntax keyword glConstant GLUT_SCREEN_WIDTH
-  syntax keyword glConstant GLUT_SCREEN_HEIGHT
-  syntax keyword glConstant GLUT_SCREEN_WIDTH_MM
-  syntax keyword glConstant GLUT_SCREEN_HEIGHT_MM
-  syntax keyword glConstant GLUT_MENU_NUM_ITEMS
-  syntax keyword glConstant GLUT_DISPLAY_MODE_POSSIBLE
-  syntax keyword glConstant GLUT_INIT_WINDOW_X
-  syntax keyword glConstant GLUT_INIT_WINDOW_Y
-  syntax keyword glConstant GLUT_INIT_WINDOW_WIDTH
-  syntax keyword glConstant GLUT_INIT_WINDOW_HEIGHT
-  syntax keyword glConstant GLUT_INIT_DISPLAY_MODE
-  syntax keyword glConstant GLUT_ELAPSED_TIME
-  syntax keyword glConstant GLUT_WINDOW_FORMAT_ID
-  syntax keyword glConstant GLUT_HAS_KEYBOARD
-  syntax keyword glConstant GLUT_HAS_MOUSE
-  syntax keyword glConstant GLUT_HAS_SPACEBALL
-  syntax keyword glConstant GLUT_HAS_DIAL_AND_BUTTON_BOX
-  syntax keyword glConstant GLUT_HAS_TABLET
-  syntax keyword glConstant GLUT_NUM_MOUSE_BUTTONS
-  syntax keyword glConstant GLUT_NUM_SPACEBALL_BUTTONS
-  syntax keyword glConstant GLUT_NUM_BUTTON_BOX_BUTTONS
-  syntax keyword glConstant GLUT_NUM_DIALS
-  syntax keyword glConstant GLUT_NUM_TABLET_BUTTONS
-  syntax keyword glConstant GLUT_DEVICE_IGNORE_KEY_REPEAT
-  syntax keyword glConstant GLUT_DEVICE_KEY_REPEAT
-  syntax keyword glConstant GLUT_HAS_JOYSTICK
-  syntax keyword glConstant GLUT_OWNS_JOYSTICK
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTONS
-  syntax keyword glConstant GLUT_JOYSTICK_AXES
-  syntax keyword glConstant GLUT_JOYSTICK_POLL_RATE
-  syntax keyword glConstant GLUT_OVERLAY_POSSIBLE
-  syntax keyword glConstant GLUT_LAYER_IN_USE
-  syntax keyword glConstant GLUT_HAS_OVERLAY
-  syntax keyword glConstant GLUT_TRANSPARENT_INDEX
-  syntax keyword glConstant GLUT_NORMAL_DAMAGED
-  syntax keyword glConstant GLUT_OVERLAY_DAMAGED
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_POSSIBLE
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_IN_USE
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_X_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT_DELTA
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_X
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_Y
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_WIDTH
-  syntax keyword glConstant GLUT_VIDEO_RESIZE_HEIGHT
-  syntax keyword glConstant GLUT_NORMAL
-  syntax keyword glConstant GLUT_OVERLAY
-  syntax keyword glConstant GLUT_ACTIVE_SHIFT
-  syntax keyword glConstant GLUT_ACTIVE_CTRL
-  syntax keyword glConstant GLUT_ACTIVE_ALT
-  syntax keyword glConstant GLUT_CURSOR_RIGHT_ARROW
-  syntax keyword glConstant GLUT_CURSOR_LEFT_ARROW
-  syntax keyword glConstant GLUT_CURSOR_INFO
-  syntax keyword glConstant GLUT_CURSOR_DESTROY
-  syntax keyword glConstant GLUT_CURSOR_HELP
-  syntax keyword glConstant GLUT_CURSOR_CYCLE
-  syntax keyword glConstant GLUT_CURSOR_SPRAY
-  syntax keyword glConstant GLUT_CURSOR_WAIT
-  syntax keyword glConstant GLUT_CURSOR_TEXT
-  syntax keyword glConstant GLUT_CURSOR_CROSSHAIR
-  syntax keyword glConstant GLUT_CURSOR_UP_DOWN
-  syntax keyword glConstant GLUT_CURSOR_LEFT_RIGHT
-  syntax keyword glConstant GLUT_CURSOR_TOP_SIDE
-  syntax keyword glConstant GLUT_CURSOR_BOTTOM_SIDE
-  syntax keyword glConstant GLUT_CURSOR_LEFT_SIDE
-  syntax keyword glConstant GLUT_CURSOR_RIGHT_SIDE
-  syntax keyword glConstant GLUT_CURSOR_TOP_LEFT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_TOP_RIGHT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_BOTTOM_RIGHT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_BOTTOM_LEFT_CORNER
-  syntax keyword glConstant GLUT_CURSOR_INHERIT
-  syntax keyword glConstant GLUT_CURSOR_NONE
-  syntax keyword glConstant GLUT_CURSOR_FULL_CROSSHAIR
-  syntax keyword glConstant GLUT_KEY_REPEAT_OFF
-  syntax keyword glConstant GLUT_KEY_REPEAT_ON
-  syntax keyword glConstant GLUT_KEY_REPEAT_DEFAULT
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_A
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_B
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_C
-  syntax keyword glConstant GLUT_JOYSTICK_BUTTON_D
-  syntax keyword glConstant GLUT_GAME_MODE_ACTIVE
-  syntax keyword glConstant GLUT_GAME_MODE_POSSIBLE
-  syntax keyword glConstant GLUT_GAME_MODE_WIDTH 
-  syntax keyword glConstant GLUT_GAME_MODE_HEIGHT
-  syntax keyword glConstant GLUT_GAME_MODE_PIXEL_DEPTH
-  syntax keyword glConstant GLUT_GAME_MODE_REFRESH_RATE
-  syntax keyword glConstant GLUT_GAME_MODE_DISPLAY_CHANGED
+  syntax keyword glConstant GLUT_WINDOW_WIDTH
+  syntax keyword glConstant GLUT_WINDOW_X
+  syntax keyword glConstant GLUT_WINDOW_Y
+  syntax keyword glConstant GLUT_XLIB_IMPLEMENTATION
   " }}}
 
   " Functions {{{
-  syntax keyword glFunction  glutInit
-  syntax keyword glFunction  glutInitDisplayMode
-  syntax keyword glFunction  glutInitDisplayString
-  syntax keyword glFunction  glutInitWindowPosition
-  syntax keyword glFunction  glutInitWindowSize
-  syntax keyword glFunction  glutMainLoop
-  syntax keyword glFunction  glutCreateWindow
-  syntax keyword glFunction  glutCreateSubWindow
-  syntax keyword glFunction  glutDestroyWindow
-  syntax keyword glFunction  glutPostRedisplay
-  syntax keyword glFunction  glutPostWindowRedisplay
-  syntax keyword glFunction  glutSwapBuffers
-  syntax keyword glFunction  glutGetWindow
-  syntax keyword glFunction  glutSetWindow
-  syntax keyword glFunction  glutSetWindowTitle
-  syntax keyword glFunction  glutSetIconTitle
-  syntax keyword glFunction  glutPositionWindow
-  syntax keyword glFunction  glutReshapeWindow
-  syntax keyword glFunction  glutPopWindow
-  syntax keyword glFunction  glutPushWindow
-  syntax keyword glFunction  glutIconifyWindow
-  syntax keyword glFunction  glutShowWindow
-  syntax keyword glFunction  glutHideWindow
-  syntax keyword glFunction  glutFullScreen
-  syntax keyword glFunction  glutSetCursor
-  syntax keyword glFunction  glutWarpPointer
-  syntax keyword glFunction  glutEstablishOverlay
-  syntax keyword glFunction  glutRemoveOverlay
-  syntax keyword glFunction  glutUseLayer
-  syntax keyword glFunction  glutPostOverlayRedisplay
-  syntax keyword glFunction  glutPostWindowOverlayRedisplay
-  syntax keyword glFunction  glutShowOverlay
-  syntax keyword glFunction  glutHideOverlay
-  syntax keyword glFunction  glutDestroyMenu
-  syntax keyword glFunction  glutGetMenu
-  syntax keyword glFunction  glutSetMenu
-  syntax keyword glFunction  glutAddMenuEntry
-  syntax keyword glFunction  glutAddSubMenu
-  syntax keyword glFunction  glutChangeToMenuEntry
-  syntax keyword glFunction  glutChangeToSubMenu
-  syntax keyword glFunction  glutRemoveMenuItem
-  syntax keyword glFunction  glutAttachMenu
-  syntax keyword glFunction  glutDetachMenu
-  syntax keyword glFunction  glutDisplayFunc
-  syntax keyword glFunction  glutReshapeFunc
-  syntax keyword glFunction  glutKeyboardFunc
-  syntax keyword glFunction  glutMouseFunc
-  syntax keyword glFunction  glutMotionFunc
-  syntax keyword glFunction  glutPassiveMotionFunc
-  syntax keyword glFunction  glutEntryFunc
-  syntax keyword glFunction  glutVisibilityFunc
-  syntax keyword glFunction  glutIdleFunc
-  syntax keyword glFunction  glutTimerFunc
-  syntax keyword glFunction  glutMenuStateFunc
-  syntax keyword glFunction  glutSpecialFunc
-  syntax keyword glFunction  glutSpaceballMotionFunc
-  syntax keyword glFunction  glutSpaceballRotateFunc
-  syntax keyword glFunction  glutSpaceballButtonFunc
-  syntax keyword glFunction  glutButtonBoxFunc
-  syntax keyword glFunction  glutDialsFunc
-  syntax keyword glFunction  glutTabletMotionFunc
-  syntax keyword glFunction  glutTabletButtonFunc
-  syntax keyword glFunction  glutMenuStatusFunc
-  syntax keyword glFunction  glutOverlayDisplayFunc
-  syntax keyword glFunction  glutWindowStatusFunc
-  syntax keyword glFunction  glutKeyboardUpFunc
-  syntax keyword glFunction  glutSpecialUpFunc
-  syntax keyword glFunction  glutJoystickFunc
-  syntax keyword glFunction  glutSetColor
-  syntax keyword glFunction  glutGetColor
-  syntax keyword glFunction  glutCopyColormap
-  syntax keyword glFunction  glutGet
-  syntax keyword glFunction  glutDeviceGet
-  syntax keyword glFunction  glutGetModifiers
-  syntax keyword glFunction  glutLayerGet
-  syntax keyword glFunction  glutGetProcAddress
-  syntax keyword glFunction  glutBitmapCharacter
-  syntax keyword glFunction  glutBitmapWidth
-  syntax keyword glFunction  glutStrokeCharacter
-  syntax keyword glFunction  glutStrokeWidth
-  syntax keyword glFunction  glutBitmapLength
-  syntax keyword glFunction  glutStrokeLength
-  syntax keyword glFunction  glutWireSphere
-  syntax keyword glFunction  glutSolidSphere
-  syntax keyword glFunction  glutWireCone
-  syntax keyword glFunction  glutSolidCone
-  syntax keyword glFunction  glutWireCube
-  syntax keyword glFunction  glutSolidCube
-  syntax keyword glFunction  glutWireTorus
-  syntax keyword glFunction  glutSolidTorus
-  syntax keyword glFunction  glutWireDodecahedron
-  syntax keyword glFunction  glutSolidDodecahedron
-  syntax keyword glFunction  glutWireTeapot
-  syntax keyword glFunction  glutSolidTeapot
-  syntax keyword glFunction  glutWireOctahedron
-  syntax keyword glFunction  glutSolidOctahedron
-  syntax keyword glFunction  glutWireTetrahedron
-  syntax keyword glFunction  glutSolidTetrahedron
-  syntax keyword glFunction  glutWireIcosahedron
-  syntax keyword glFunction  glutSolidIcosahedron
-  syntax keyword glFunction  glutVideoResizeGet
-  syntax keyword glFunction  glutSetupVideoResizing
-  syntax keyword glFunction  glutStopVideoResizing
-  syntax keyword glFunction  glutVideoResize
-  syntax keyword glFunction  glutVideoPan
-  syntax keyword glFunction  glutReportErrors
-  syntax keyword glFunction  glutIgnoreKeyRepeat
-  syntax keyword glFunction  glutSetKeyRepeat
-  syntax keyword glFunction  glutForceJoystickFunc
-  syntax keyword glFunction  glutGameModeString
-  syntax keyword glFunction  glutEnterGameMode
-  syntax keyword glFunction  glutLeaveGameMode
-  syntax keyword glFunction  glutGameModeGet
+  syntax keyword glFunction glutAddMenuEntry
+  syntax keyword glFunction glutAddSubMenu
+  syntax keyword glFunction glutAttachMenu
+  syntax keyword glFunction glutBitmapCharacter
+  syntax keyword glFunction glutBitmapHeight
+  syntax keyword glFunction glutBitmapLength
+  syntax keyword glFunction glutBitmapString
+  syntax keyword glFunction glutBitmapWidth
+  syntax keyword glFunction glutButtonBoxFunc
+  syntax keyword glFunction glutChangeToMenuEntry
+  syntax keyword glFunction glutChangeToSubMenu
+  syntax keyword glFunction glutCloseFunc
+  syntax keyword glFunction glutCopyColormap
+  syntax keyword glFunction glutCreateMenu
+  syntax keyword glFunction glutCreateSubWindow
+  syntax keyword glFunction glutCreateWindow
+  syntax keyword glFunction glutDestroyMenu
+  syntax keyword glFunction glutDestroyWindow
+  syntax keyword glFunction glutDetachMenu
+  syntax keyword glFunction glutDeviceGet
+  syntax keyword glFunction glutDialsFunc
+  syntax keyword glFunction glutDisplayFunc
+  syntax keyword glFunction glutEnterGameMode
+  syntax keyword glFunction glutEntryFunc
+  syntax keyword glFunction glutEstablishOverlay
+  syntax keyword glFunction glutExit
+  syntax keyword glFunction glutExtensionSupported
+  syntax keyword glFunction glutForceJoystickFunc
+  syntax keyword glFunction glutFullScreen
+  syntax keyword glFunction glutFullScreenToggle
+  syntax keyword glFunction glutGameModeGet
+  syntax keyword glFunction glutGameModeString
+  syntax keyword glFunction glutGet
+  syntax keyword glFunction glutGetColor
+  syntax keyword glFunction glutGetMenu
+  syntax keyword glFunction glutGetMenuData
+  syntax keyword glFunction glutGetModeValues
+  syntax keyword glFunction glutGetModifiers
+  syntax keyword glFunction glutGetProcAddress
+  syntax keyword glFunction glutGetWindow
+  syntax keyword glFunction glutGetWindowData
+  syntax keyword glFunction glutHideOverlay
+  syntax keyword glFunction glutHideWindow
+  syntax keyword glFunction glutIconifyWindow
+  syntax keyword glFunction glutIdleFunc
+  syntax keyword glFunction glutIgnoreKeyRepeat
+  syntax keyword glFunction glutInit
+  syntax keyword glFunction glutInitContextFlags
+  syntax keyword glFunction glutInitContextProfile
+  syntax keyword glFunction glutInitContextVersion
+  syntax keyword glFunction glutInitDisplayMode
+  syntax keyword glFunction glutInitDisplayString
+  syntax keyword glFunction glutInitErrorFunc
+  syntax keyword glFunction glutInitWarningFunc
+  syntax keyword glFunction glutInitWindowPosition
+  syntax keyword glFunction glutInitWindowSize
+  syntax keyword glFunction glutJoystickFunc
+  syntax keyword glFunction glutKeyboardFunc
+  syntax keyword glFunction glutKeyboardUpFunc
+  syntax keyword glFunction glutLayerGet
+  syntax keyword glFunction glutLeaveFullScreen
+  syntax keyword glFunction glutLeaveGameMode
+  syntax keyword glFunction glutLeaveMainLoop
+  syntax keyword glFunction glutMainLoop
+  syntax keyword glFunction glutMainLoopEvent
+  syntax keyword glFunction glutMenuDestroyFunc
+  syntax keyword glFunction glutMenuStateFunc
+  syntax keyword glFunction glutMenuStatusFunc
+  syntax keyword glFunction glutMotionFunc
+  syntax keyword glFunction glutMouseFunc
+  syntax keyword glFunction glutMouseWheelFunc
+  syntax keyword glFunction glutMultiButtonFunc
+  syntax keyword glFunction glutMultiEntryFunc
+  syntax keyword glFunction glutMultiMotionFunc
+  syntax keyword glFunction glutMultiPassiveFunc
+  syntax keyword glFunction glutOverlayDisplayFunc
+  syntax keyword glFunction glutPassiveMotionFunc
+  syntax keyword glFunction glutPopWindow
+  syntax keyword glFunction glutPositionWindow
+  syntax keyword glFunction glutPostOverlayRedisplay
+  syntax keyword glFunction glutPostRedisplay
+  syntax keyword glFunction glutPostWindowOverlayRedisplay
+  syntax keyword glFunction glutPostWindowRedisplay
+  syntax keyword glFunction glutPushWindow
+  syntax keyword glFunction glutRemoveMenuItem
+  syntax keyword glFunction glutRemoveOverlay
+  syntax keyword glFunction glutReportErrors
+  syntax keyword glFunction glutReshapeFunc
+  syntax keyword glFunction glutReshapeWindow
+  syntax keyword glFunction glutSetColor
+  syntax keyword glFunction glutSetCursor
+  syntax keyword glFunction glutSetIconTitle
+  syntax keyword glFunction glutSetKeyRepeat
+  syntax keyword glFunction glutSetMenu
+  syntax keyword glFunction glutSetMenuData
+  syntax keyword glFunction glutSetOption
+  syntax keyword glFunction glutSetWindow
+  syntax keyword glFunction glutSetWindowData
+  syntax keyword glFunction glutSetWindowTitle
+  syntax keyword glFunction glutSetupVideoResizing
+  syntax keyword glFunction glutShowOverlay
+  syntax keyword glFunction glutShowWindow
+  syntax keyword glFunction glutSolidCone
+  syntax keyword glFunction glutSolidCube
+  syntax keyword glFunction glutSolidCylinder
+  syntax keyword glFunction glutSolidDodecahedron
+  syntax keyword glFunction glutSolidIcosahedron
+  syntax keyword glFunction glutSolidOctahedron
+  syntax keyword glFunction glutSolidRhombicDodecahedron
+  syntax keyword glFunction glutSolidSierpinskiSponge
+  syntax keyword glFunction glutSolidSphere
+  syntax keyword glFunction glutSolidTeapot
+  syntax keyword glFunction glutSolidTetrahedron
+  syntax keyword glFunction glutSolidTorus
+  syntax keyword glFunction glutSpaceballButtonFunc
+  syntax keyword glFunction glutSpaceballMotionFunc
+  syntax keyword glFunction glutSpaceballRotateFunc
+  syntax keyword glFunction glutSpecialFunc
+  syntax keyword glFunction glutSpecialUpFunc
+  syntax keyword glFunction glutStopVideoResizing
+  syntax keyword glFunction glutStrokeCharacter
+  syntax keyword glFunction glutStrokeHeight
+  syntax keyword glFunction glutStrokeLength
+  syntax keyword glFunction glutStrokeString
+  syntax keyword glFunction glutStrokeWidth
+  syntax keyword glFunction glutSwapBuffers
+  syntax keyword glFunction glutTabletButtonFunc
+  syntax keyword glFunction glutTabletMotionFunc
+  syntax keyword glFunction glutTimerFunc
+  syntax keyword glFunction glutUseLayer
+  syntax keyword glFunction glutVideoPan
+  syntax keyword glFunction glutVideoResize
+  syntax keyword glFunction glutVideoResizeGet
+  syntax keyword glFunction glutVisibilityFunc
+  syntax keyword glFunction glutWMCloseFunc
+  syntax keyword glFunction glutWarpPointer
+  syntax keyword glFunction glutWindowStatusFunc
+  syntax keyword glFunction glutWireCone
+  syntax keyword glFunction glutWireCube
+  syntax keyword glFunction glutWireCylinder
+  syntax keyword glFunction glutWireDodecahedron
+  syntax keyword glFunction glutWireIcosahedron
+  syntax keyword glFunction glutWireOctahedron
+  syntax keyword glFunction glutWireRhombicDodecahedron
+  syntax keyword glFunction glutWireSierpinskiSponge
+  syntax keyword glFunction glutWireSphere
+  syntax keyword glFunction glutWireTeapot
+  syntax keyword glFunction glutWireTetrahedron
+  syntax keyword glFunction glutWireTorus
   " }}}
 " }}}
 endif