Revision history: 
    doctorgonzo is	sboyle@maths.tcd.ie
    Greg Reid is	gar@catt.ncsu.edu

GIF320 v3.0	Tue Jun 23 1992	doctorgonzo	Made the interface more
						screen-oriented and added
						the zoom-and-warp abilities.

GIFView v2.1	5 December 1991	doctorgonzo	Optimisation estimator added.
						Pipe ability added.

GIFView v2.0	Tue Jun 23 1991	doctorgonzo	Added optimisation, RGB &
						output value threshold
						modification, line-oriented
						interaction.

GIFView v1.0	6 December 1989	Gregory Reid	Modified GIFtoPS to use vt320
						SIXEL graphics rather than
						output PostScript.

GIFtoPS		May 16 1988	Scott Hemphill	original GIF-reading code.
