IBM and Compatibles: DOS: CHAIRMAN
An anonymous writer says
"I bumped into this POS.... It's without a doubt the single worst BBS
product for the DOS market ever. It was overpriced, badly designed, very badly documented, and had incredibly bad commands. There was a de facto standard of expected commands for BBSes of the RBBS/FIDO style in those days that the folks at Chairman were too good to bother with. (I phoned 'em and talked to 'em at one point--they were real jerks.) The example I remember specifically was that H was almost always help on most of the other BBSes but on Chairman it was "Hang up." Well, after messing with their software, that was probably the most helpful thing they could do for you."