Script commands safe subset

New QCAD user,

Last week, while searching for QCAD tutorials, I found a page listing a “safe subset” of QCAD/Javascript commands, suitable for beginners.
Today I wanted to read it, but I was unable to find that page again.
A link to that page would be appreciated.

Thanks,

R.W.

Scripting tutorials:

QCAD Simple API: