That reminds me.

Does Guide have a site licence thing then?

I dunno, with free user support, budget upgrade routes when new versions come out, free software upgrades without a service charge, and everything, Bill's never going to get rich at this rate ;)

That's why I've never understood why some folk use some of the other commercial alternatives to Guide. Granted that a couple of the freeware and shareware alternatives look user extendable in terms of data, but I'm locked into Guide now, and Guide always delivers on all the Celestial Mechanics stuff, which is an area I've no hope of doing for myself.

Cheers

John