GRASS v4.1 source - not binary - is on the Prime TIme Freeware from Unix, Issue 2-2. The e-mail address is ptf at cfcl.com Steve Culshaw NRA North West e-mail : nra at cix.compulink.co.uk (use this for general usage) or sculshaw at cix.compulink.co.uk (Private - only checked at best biweekly)