To Install proceed like follows:

for UNIX: 
	edit the Makefile then type `make install'
	(you just need to indicate the installation directory)

for DOS (borland):
	build a project containing *all* *.c files, put on Memory
	Model Large and compile

	Alternatively, use the grev.exe pre-compiled executable,
	which should be run in a DOS window.

for MAC:
	compile defining the additional macro MAC


To Uninstall:

for UNIX: 
	type 'make uninstall'

for other systems:
	delete the files by hand
