The second revision of Orbiter from 2003. While this wasn't called 2003-P1 at the time as far as I can tell, that's what Orbiter later started using, so I've kept that format here as we go backwards in time.
You need _base and _tex for a working Orbiter install. The _sdk is optional.
You need _base and _tex for a working Orbiter install. The _sdk is optional.