NAME
	AreaDraw -- Add a point to a list of end points for areafill.


   SYNOPSIS
	error = AreaDraw( rp,  x,     y)
	  d0	          A1 D0:16 D1:16

	 ULONG AreaDraw( struct  RastPort *,  SHORT,  SHORT);

   FUNCTION
	Add point to the vector buffer.


   INPUTS
	rp	- points to a  RastPort structure.
	x,y	- are coordinates of a point in the raster.

   RESULT
	error	- zero for success, else -1 if no there was no space
		  left in the vector list.

   BUGS

   SEE ALSO
	 AreaMove()  InitArea()  AreaEnd()  sc:include/graphics/rastport.h