> Reply off-list if this is too far from topical.

Given where this discussion has now gotten to, this is definitely
off-topic for this list.

But while I'm writing this anyways... ;-)

You forgot:

- functions for purchasing
- functions for the 'bean counters'
- functions for reporting/analysis.
- the web site interface
- third-party / external interface for reservations/bookings/searches
(Sabre, Travelocity...)


Sean