It was originally a Point Of Sale system, but it was hacked and extended and patched to be everything to everyone. It does POS at retail counters, plus inventory control, purchasing, personnel, accounts payable, accounts receivable, ERP, and every other IT computer function, for a meta- company and eight separate companies spread over ~15 locations in ~8 states, and manages to do all of it, including the POS, rather badly, so it's also a Piece Of Shit.
Now, they're in a position where they can't fix it, because the long term users scream if any of the counterintuitive and bizarre keystroke sequences they've memorized are changed even a little bit. They don't even look at the screen to navigate the system, mostly because the screen prompts are misleading or missing.
I tried to map it. It seems to have pieces and subfunctions that I've seen in other AS/400 based systems, but there isn't a menu system linking it all together. It's like they stole a piece from one place and another piece from another place, and so on, which is sort of what they did, as functions were added over the years by different generations of folks who were used to doing things in different ways.
I had them add a simple derivative menu option for me. It took a couple of days, and worked as I had asked. ... but none of my coworkers could see it. IT had to add that menu option individually for every user who would like to have it. ... word of mouth was the only way to find out about the existence of menu options that might be of use to you. The perfect menu suite for my uses is probably still hidden in there, somewhere.
Mike Halloran
Pembroke Pines, FL, USA