NAME
	  fglHint - specify implementation-specific hints


     FORTRAN SPECIFICATION
	  SUBROUTINE fglHint( INTEGER*4	target,
			      INTEGER*4	mode )


     PARAMETERS
	  target  Specifies a symbolic constant	indicating the
		  behavior to be controlled.  GL_FOG_HINT,
		  GL_LINE_SMOOTH_HINT, GL_PERSPECTIVE_CORRECTION_HINT,
		  GL_POINT_SMOOTH_HINT,	and GL_POLYGON_SMOOTH_HINT are
		  accepted.

	  mode	  Specifies a symbolic constant	indicating the desired
		  behavior.  GL_FASTEST, GL_NICEST, and	GL_DONT_CARE
		  are accepted.

     DESCRIPTION
	  Certain aspects of GL	behavior, when there is	room for
	  interpretation, can be controlled with hints.	 A hint	is
	  specified with two arguments.	 target	is a symbolic constant
	  indicating the behavior to be	controlled, and	mode is
	  another symbolic constant indicating the desired behavior.
	  The initial value for	each target is GL_DONT_CARE. mode can
	  be one of the	following:

	  GL_FASTEST	      The most efficient option	should be
			      chosen.

	  GL_NICEST	      The most correct,	or highest quality,
			      option should be chosen.

	  GL_DONT_CARE	      No preference.

	  Though the implementation aspects that can be	hinted are
	  well defined,	the interpretation of the hints	depends	on the
	  implementation.  The hint aspects that can be	specified with
	  target, along	with suggested semantics, are as follows:

	  GL_FOG_HINT	      Indicates	the accuracy of	fog
			      calculation.  If per-pixel fog
			      calculation is not efficiently supported
			      by the GL	implementation,	hinting
			      GL_DONT_CARE or GL_FASTEST can result in
			      per-vertex calculation of	fog effects.

	  GL_LINE_SMOOTH_HINT Indicates	the sampling quality of
			      antialiased lines.  If a larger filter
			      function is applied, hinting GL_NICEST
			      can result in more pixel fragments being
			      generated	during rasterization,

	  GL_PERSPECTIVE_CORRECTION_HINT
			      Indicates	the quality of color and
			      texture coordinate interpolation.	 If
			      perspective-corrected parameter
			      interpolation is not efficiently
			      supported	by the GL implementation,
			      hinting GL_DONT_CARE or GL_FASTEST can
			      result in	simple linear interpolation of
			      colors and/or texture coordinates.

	  GL_POINT_SMOOTH_HINT
			      Indicates	the sampling quality of
			      antialiased points.  If a	larger filter
			      function is applied, hinting GL_NICEST
			      can result in more pixel fragments being
			      generated	during rasterization,

	  GL_POLYGON_SMOOTH_HINT
			      Indicates	the sampling quality of
			      antialiased polygons.  Hinting GL_NICEST
			      can result in more pixel fragments being
			      generated	during rasterization, if a
			      larger filter function is	applied.

     NOTES
	  The interpretation of	hints depends on the implementation.
	  Some implementations ignore fglHint settings.

     ERRORS
	  GL_INVALID_ENUM is generated if either target	or mode	is not
	  an accepted value.

	  GL_INVALID_OPERATION is generated if fglHint is executed
	  between the execution	of fglBegin and	the corresponding
	  execution of fglEnd.