filename	IN:	Name of the file
	image	IN:	Array containing the image data
	width	IN:	Number of columns in the image
	height	IN:	Number of rows in the image
	compress	IN:	Type of compression to use, if any

	Purpose	Appends the RIS8 for the image to the file.
	Return value	Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
	Description	DFR8addimage is functionally equivalent to DFR8putimage, except that DFR8putimage cannot append image data; it only overwrites.

	FORTRAN	integer function d8aimg(filename, image, width, height, compress)
		character*(*) filename, image
		integer width, height
		integer compress