NAME
	  fglDepthMask - enable	or disable writing into	the depth
	  buffer


     FORTRAN SPECIFICATION
	  SUBROUTINE fglDepthMask( LOGICAL*1 flag )


     PARAMETERS
	  flag	Specifies whether the depth buffer is enabled for
		writing.  If flag is GL_FALSE, depth buffer writing is
		disabled.  Otherwise, it is enabled.  Initially, depth
		buffer writing is enabled.

     DESCRIPTION
	  fglDepthMask specifies whether the depth buffer is enabled
	  for writing.	If flag	is GL_FALSE, depth buffer writing is
	  disabled.  Otherwise,	it is enabled.	Initially, depth
	  buffer writing is enabled.

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

     ASSOCIATED	GETS
	  fglGet with argument GL_DEPTH_WRITEMASK

     SEE ALSO
	  fglColorMask,	fglDepthFunc, fglDepthRange, fglIndexMask,
	  fglStencilMask