Changes on GRAV
---------------

18.07.94   1.5  PUBLIC   The graphics are now shown centered on the screen
18.07.94   1.5  PRIVATE  TIFF-Files: Suffix .TIFF is now valid, too
04.06.94   1.4  PRIVATE  Bugfix: Viewing b/w-pictures now works correct
04.06.94   1.3  PRIVATE  More targets in the Makefile (clean and install)
04.06.94   1.3  PRIVATE  Using correct attributes for black/white screens
03.06.94   1.2  PRIVATE  Added parameters  -mono, -bw, -color and -colour
16.04.94   1.2  PRIVATE  Filetagging and a new Help-Window
15.04.94   1.1  PRIVATE  A little source-cleanup
13.04.94   1.1  PRIVATE  Scrolling of Graphics
31.03.94   1.0  PRIVATE  Viewing of 24Bit-Pictures disabled (no support yet)
30.03.94   1.0  PUBLIC   Creating .gravrc with meaningful permissions
