NAME
	  glEnable, glDisable -	enable or disable server-side GL
	  capabilities


     C SPECIFICATION
	  void glEnable( GLenum	cap )


     PARAMETERS
	  cap  Specifies a symbolic constant indicating	a GL
	       capability.

     C SPECIFICATION
	  void glDisable( GLenum cap )


     PARAMETERS
	  cap  Specifies a symbolic constant indicating	a GL
	       capability.

     DESCRIPTION
	  glEnable and glDisable enable	and disable various
	  capabilities.	 Use glIsEnabled or glGet to determine the
	  current setting of any capability. The initial value for
	  each capability with the exception of	GL_DITHER is GL_FALSE.
	  The initial value for	GL_DITHER is GL_TRUE.

	  Both glEnable	and glDisable take a single argument, cap,
	  which	can assume one of the following	values:

	  GL_ALPHA_TEST		   If enabled, do alpha	testing. See
				   glAlphaFunc.

	  GL_AUTO_NORMAL	   If enabled, generate	normal vectors
				   when	either GL_MAP2_VERTEX_3	or
				   GL_MAP2_VERTEX_4 is used to
				   generate vertices. See glMap2.

	  GL_BLEND		   If enabled, blend the incoming RGBA
				   color values	with the values	in the
				   color buffers. See glBlendFunc.

	  GL_CLIP_PLANEi	   If enabled, clip geometry against
				   user-defined	clipping plane i.  See
				   glClipPlane.

	  GL_COLOR_LOGIC_OP	   If enabled, apply the currently
				   selected logical operation to the
				   incoming RGBA color and color
				   buffer values. See glLogicOp.

	  GL_COLOR_MATERIAL	   If enabled, have one	or more
				   material parameters track the
				   current color.  See
				   glColorMaterial.

	  GL_CULL_FACE		   If enabled, cull polygons based on
				   their winding in window
				   coordinates.	See glCullFace.

	  GL_DEPTH_TEST		   If enabled, do depth	comparisons
				   and update the depth	buffer.	Note
				   that	even if	the depth buffer
				   exists and the depth	mask is	non-
				   zero, the depth buffer is not
				   updated if the depth	test is
				   disabled. See glDepthFunc and
				   glDepthRange.

	  GL_DITHER		   If enabled, dither color components
				   or indices before they are written
				   to the color	buffer.

	  GL_FOG		   If enabled, blend a fog color into
				   the posttexturing color.  See
				   glFog.

	  GL_INDEX_LOGIC_OP	   If enabled, apply the currently
				   selected logical operation to the
				   incoming index and color buffer
				   indices. See
				   glLogicOp.

	  GL_LIGHTi		   If enabled, include light i in the
				   evaluation of the lighting
				   equation. See glLightModel and
				   glLight.

	  GL_LIGHTING		   If enabled, use the current
				   lighting parameters to compute the
				   vertex color	or index.  Otherwise,
				   simply associate the	current	color
				   or index with each vertex. See
				   glMaterial, glLightModel, and
				   glLight.

	  GL_LINE_SMOOTH	   If enabled, draw lines with correct
				   filtering.  Otherwise, draw aliased
				   lines.  See glLineWidth.

	  GL_LINE_STIPPLE	   If enabled, use the current line
				   stipple pattern when	drawing	lines.
				   See glLineStipple.

	  GL_MAP1_COLOR_4	   If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate RGBA values.  See glMap1.

	  GL_MAP1_INDEX		   If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate color indices.  See
				   glMap1.

	  GL_MAP1_NORMAL	   If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate normals.  See glMap1.

	  GL_MAP1_TEXTURE_COORD_1  If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate s texture coordinates.
				   See glMap1.

	  GL_MAP1_TEXTURE_COORD_2  If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate s and t texture
				   coordinates.	 See glMap1.

	  GL_MAP1_TEXTURE_COORD_3  If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate s, t, and r	texture
				   coordinates.	 See glMap1.

	  GL_MAP1_TEXTURE_COORD_4  If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate s, t, r, and q texture
				   coordinates.	 See glMap1.

	  GL_MAP1_VERTEX_3	   If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate x, y, and z	vertex
				   coordinates.	 See glMap1.

	  GL_MAP1_VERTEX_4	   If enabled, calls to	glEvalCoord1,
				   glEvalMesh1,	and glEvalPoint1
				   generate homogeneous	x, y, z, and w
				   vertex coordinates.	See glMap1.

	  GL_MAP2_COLOR_4	   If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate RGBA values.  See glMap2.

	  GL_MAP2_INDEX		   If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate color indices.  See
				   glMap2.

	  GL_MAP2_NORMAL	   If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate normals.  See glMap2.

	  GL_MAP2_TEXTURE_COORD_1  If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate s texture coordinates.
				   See glMap2.

	  GL_MAP2_TEXTURE_COORD_2  If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate s and t texture
				   coordinates.	 See glMap2.

	  GL_MAP2_TEXTURE_COORD_3  If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate s, t, and r	texture
				   coordinates.	 See glMap2.

	  GL_MAP2_TEXTURE_COORD_4  If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate s, t, r, and q texture
				   coordinates.	 See glMap2.

	  GL_MAP2_VERTEX_3	   If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate x, y, and z	vertex
				   coordinates.	 See glMap2.

	  GL_MAP2_VERTEX_4	   If enabled, calls to	glEvalCoord2,
				   glEvalMesh2,	and glEvalPoint2
				   generate homogeneous	x, y, z, and w
				   vertex coordinates.	See glMap2.

	  GL_NORMALIZE		   If enabled, normal vectors
				   specified with glNormal are scaled
				   to unit length after
				   transformation. See glNormal.

	  GL_POINT_SMOOTH	   If enabled, draw points with	proper
				   filtering.  Otherwise, draw aliased
				   points.  See	glPointSize.

	  GL_POLYGON_OFFSET_FILL   If enabled, and if the polygon is
				   rendered in GL_FILL mode, an	offset
				   is added to depth values of a
				   polygon's fragments before the
				   depth comparison is performed. See
				   glPolygonOffset.

	  GL_POLYGON_OFFSET_LINE   If enabled, and if the polygon is
				   rendered in GL_LINE mode, an	offset
				   is added to depth values of a
				   polygon's fragments before the
				   depth comparison is performed. See
				   glPolygonOffset.

	  GL_POLYGON_OFFSET_POINT  If enabled, an offset is added to
				   depth values	of a polygon's
				   fragments before the	depth
				   comparison is performed, if the
				   polygon is rendered in GL_POINT
				   mode. See
				   glPolygonOffset.

	  GL_POLYGON_SMOOTH	   If enabled, draw polygons with
				   proper filtering.  Otherwise, draw
				   aliased polygons. For correct
				   anti-aliased	polygons, an alpha
				   buffer is needed and	the polygons
				   must	be sorted front	to back.

	  GL_POLYGON_STIPPLE	   If enabled, use the current polygon
				   stipple pattern when	rendering
				   polygons. See glPolygonStipple.

	  GL_SCISSOR_TEST	   If enabled, discard fragments that
				   are outside the scissor rectangle.
				   See glScissor.

	  GL_STENCIL_TEST	   If enabled, do stencil testing and
				   update the stencil buffer. See
				   glStencilFunc and glStencilOp.

	  GL_TEXTURE_1D		   If enabled, one-dimensional
				   texturing is	performed (unless
				   two-dimensional texturing is	also
				   enabled). See glTexImage1D.

	  GL_TEXTURE_2D		   If enabled, two-dimensional
				   texturing is	performed. See
				   glTexImage2D.

	  GL_TEXTURE_GEN_Q	   If enabled, the q texture
				   coordinate is computed using	the
				   texture generation function defined
				   with	glTexGen.  Otherwise, the
				   current q texture coordinate	is
				   used.  See glTexGen.

	  GL_TEXTURE_GEN_R	   If enabled, the r texture
				   coordinate is computed using	the
				   texture generation function defined
				   with	glTexGen.  Otherwise, the
				   current r texture coordinate	is
				   used.  See glTexGen.

	  GL_TEXTURE_GEN_S	   If enabled, the s texture
				   coordinate is computed using	the
				   texture generation function defined
				   with	glTexGen.  Otherwise, the
				   current s texture coordinate	is
				   used. See glTexGen.

	  GL_TEXTURE_GEN_T	   If enabled, the t texture
				   coordinate is computed using	the
				   texture generation function defined
				   with	glTexGen.  Otherwise, the
				   current t texture coordinate	is
				   used.  See glTexGen.

     NOTES
	  GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_LINE,
	  GL_POLYGON_OFFSET_POINT, GL_COLOR_LOGIC_OP, and
	  GL_INDEX_LOGIC_OP are	only available if the GL version is
	  1.1 or greater.

     ERRORS
	  GL_INVALID_ENUM is generated if cap is not one of the	values
	  listed previously.

	  GL_INVALID_OPERATION is generated if glEnable	or glDisable
	  is executed between the execution of glBegin and the
	  corresponding	execution of glEnd.

     SEE ALSO
	  glAlphaFunc, glBlendFunc, glClipPlane, glColorMaterial,
	  glCullFace,
	  glDepthFunc, glDepthRange, glEnableClientState, glFog,
	  glGet, glIsEnabled, glLight, glLightModel, glLineWidth,
	  glLineStipple, glLogicOp, glMap1, glMap2, glMaterial,
	  glNormal, glPointSize, glPolygonMode,	glPolygonOffset,
	  glPolygonStipple, glScissor, glStencilFunc, glStencilOp,
	  glTexGen, glTexImage1D, glTexImage2D