NAME
	  glIsEnabled -	test whether a capability is enabled


     C SPECIFICATION
	  GLboolean glIsEnabled( GLenum	cap )


     PARAMETERS
	  cap  Specifies a symbolic constant indicating	a GL
	       capability.

     DESCRIPTION
	  glIsEnabled returns GL_TRUE if cap is	an enabled capability
	  and returns GL_FALSE otherwise.  Initially all capabilities
	  except GL_DITHER are disabled; GL_DITHER is initially
	  enabled.

	  The following	capabilities are accepted for cap:

	  Constant		     See
	  _______________________________________________________________

	  GL_ALPHA_TEST		     glAlphaFunc
	  GL_AUTO_NORMAL	     glEvalCoord
	  GL_BLEND		     glBlendFunc, glLogicOp
	  GL_CLIP_PLANEi	     glClipPlane
	  GL_COLOR_ARRAY	     glColorPointer
	  GL_COLOR_LOGIC_OP	     glLogicOp
	  GL_COLOR_MATERIAL	     glColorMaterial
	  GL_CULL_FACE		     glCullFace
	  GL_DEPTH_TEST		     glDepthFunc, glDepthRange
	  GL_DITHER		     glEnable
	  GL_EDGE_FLAG_ARRAY	     glEdgeFlagPointer
	  GL_FOG		     glFog
	  GL_INDEX_ARRAY	     glIndexPointer
	  GL_INDEX_LOGIC_OP	     glLogicOp
	  GL_LIGHTi		     glLightModel, glLight
	  GL_LIGHTING		     glMaterial, glLightModel, glLight
	  GL_LINE_SMOOTH	     glLineWidth
	  GL_LINE_STIPPLE	     glLineStipple
	  GL_MAP1_COLOR_4	     glMap1, glMap2
	  GL_MAP2_TEXTURE_COORD_2    glMap2
	  GL_MAP2_TEXTURE_COORD_3    glMap2
	  GL_MAP2_TEXTURE_COORD_4    glMap2
	  GL_MAP2_VERTEX_3	     glMap2
	  GL_MAP2_VERTEX_4	     glMap2
	  GL_NORMAL_ARRAY	     glNormalPointer
	  GL_NORMALIZE		     glNormal
	  GL_POINT_SMOOTH	     glPointSize


	  GL_POLYGON_SMOOTH	     glPolygonMode
	  GL_POLYGON_OFFSET_FILL     glPolygonOffset
	  GL_POLYGON_OFFSET_LINE     glPolygonOffset
	  GL_POLYGON_OFFSET_POINT    glPolygonOffset
	  GL_POLYGON_STIPPLE	     glPolygonStipple
	  GL_SCISSOR_TEST	     glScissor
	  GL_STENCIL_TEST	     glStencilFunc, glStencilOp
	  GL_TEXTURE_1D		     glTexImage1D
	  GL_TEXTURE_2D		     glTexImage2D
	  GL_TEXTURE_COORD_ARRAY     glTexCoordPointer
	  GL_TEXTURE_GEN_Q	     glTexGen
	  GL_TEXTURE_GEN_R	     glTexGen
	  GL_TEXTURE_GEN_S	     glTexGen
	  GL_TEXTURE_GEN_T	     glTexGen
	  GL_VERTEX_ARRAY	     glVertexPointer

     NOTES
	  If an	error is generated, glIsEnabled	returns	0.

	  GL_COLOR_LOGIC_OP, GL_COLOR_ARRAY, GL_EDGE_FLAG_ARRAY,
	  GL_INDEX_ARRAY, GL_INDEX_LOGIC_OP, GL_NORMAL_ARRAY,
	  GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_LINE,
	  GL_POLYGON_OFFSET_POINT, GL_TEXTURE_COORD_ARRAY, and
	  GL_VERTEX_ARRAY are only available if	the GL version is 1.1
	  or greater

     ERRORS
	  GL_INVALID_ENUM is generated if cap is not an	accepted
	  value.

	  GL_INVALID_OPERATION is generated if glIsEnabled is executed
	  between the execution	of glBegin and the corresponding
	  execution of glEnd.

     SEE ALSO
	  glEnable, glEnableClientState