JoCRaM

Ooops, you're right, it was R(0-Pitch, Yaw, Roll). The three argument form was in 0.92 - https://github.com/Nivekk/KOS/blob/f87b56f0ec27019798ef2ef85451133dd84e137d/Expression.cs#L434-L444

Ah, you lost the optional third argument when you tidied it up. I can use this instead, but it would be nice if it could find it's way back into the language.... LOCK STEERING TO HEADING(0,0)*R(0-Pitch, Yaw, Roll).

So... what replaced heading(pitch,roll,yaw)? - It still produces a R()otation, but if you try to use it it gives a cast error? SET Pitch to 90. SET Roll to -90. SET Yaw TO 0. LOCK STEERING TO HEADING(Pitch, Yaw, Roll). Now gives "cannot cast from source type to destination type. (Cannot show kOS Error Location - error might really be internal. See kOS devs.)"