Id would like to know what controls the available sex positions in different types of scenes, any pointers on how to change those choices?
Exactly 2 commands call the animation sequence:
sex
sexnoaffair (no consequences trigger)
Also mainly 4 filter modifies them:
sexatpoint (coordinate specific sex init)
filter
filterdesc (description text)
filtertalk (text dialogs)
Also the composition of actors listed on the commands filter fhe appliable scene types to (FM, FF, MM, FFM, etc.)
You can see the full descriptions and explanations in the \Docs\Modding\Command_Functions\ directory.