I've found two so far, but there are probably more
The Atan and Atan2 functions are undocumented.
Items don't have HitZHeight properties according to the compiler. Probably some others (like HitZOffset, etc...) as well, though.
More ZScript documentation errors.
Yeah, I tried using HitZOffset for both npcs and lweapons recently and got errors from both.
HitZHeight works for me. But yes, HitZOffset doesn't exist. Out they go!
Also, a sentence about ArcTan(x,y) is added.
Confirmed Fixed.
I just noticed that Waitdraw is not mentioned in zscript.txt.