on a mori jr w/10m control theres a button on the lower right with the abrv. ApF, what does it mean and what does it do?

If I remember right, if you were running a long program, and it was close to quiting time, instead of stopping in the middle of the program, you could turn on the APF switch and when the NC read the M30, it would automatically power the machine off. I mean the whole machine, main switch and all. If you want to try it and see if it works, turn on the APF switch and give it an M30 in MDI to see if it powers off.