I have many questions and the valve dev wiki doesn't have enough information for my liking.
What is a delta animation and how does it interact with the subtract command? My understanding is that it is an animation that plays over other animations already playing.
How does the transition commmand work? Does it require the node command? Can a 'node' be named anything or does it require a certain naming scheme? Is the 'ACT_TRANSITION' activity unused or bugged? Does it not work on playermodels?
What is the best way to handle a looping animation with an intro? (e.g Jump > Falling, Ducking down > crouch idle) Two seperate animations? One long one with duplicated frames at the end? Can I accomplish this without using code?
Is there any way to make a looping animation restart every time it's played? By default it will unpause itself and continue where it was interrupted, causing my model's arms during its idle animation to blend in an undesired way when continuing.
What activities are actually used in sandbox? The gmod wiki's enum list has a whole bunch of activites are listed, but some don't seem to do anything. What is the difference between 'ACT_IDLE' or 'ACT_MP_STAND_IDLE' or 'ACT_HL2MP_IDLE'?
What is a corrective animation?