* and / Operators on Point data

Does anyone have a list of what the various operators do to point data? I've dug around the RT Toolbox 3 help files, and the various manuals for Melfa-Basic V I can find, but I am having trouble finding anything.

I'm trying to figure out what the following line of code does, and I want to make sure I understand the various operations correctly. Specifically the '/' operator.

PVTR=(P_Zero/PWKPOS)*PTEACH

The area I'm getting confused on is the / operator. It is not a scaler function, since zero divided by anything should be zero. In terms of transform math, division isn't a valid operation. Is it inversion?