The folk on the following page have a few different versions for unix and/or linux, this link takes one to a section in the page for 5.1, go to the top when finished at that location and do a search for unix to see the other offerings. I don't know if these unix flavors will work in linux, only one specifies linux and it is an x-windows version: http://www.emsps.com/oldtools/wp.htm#wp51unix xv ic|xc
