I'm really "wet behind the ears" using Mastercam. I purchased a hardcopy textbook called "MILL ESSENTIALS" tutorial and started to slog my way thru the 1st. exercise. What I found to be problematic is that even though this info. is supposed to be at the most basic level, I keep encountering terminology I don't know and which is not defined. examples: Tplane; Cplane; translate; etc. My question is: Is there a source (Mastercam Dictionary) where individual items (terminology) are defined. Help menus seem to just reuse a particular term in relation to others or other processes but still don' define the term itself.