Command:
/action [entity] [action] testfor [x] [y] [z] [actiondetails]
or
/action [entity] [action] testfor [x] [y] [z] [xrad] [yrad] [zrad] [actiondetails]
--------------------------------------------------------------------------------------------------------------------------------Description:
This command will force an entity to do an action (see Actions for more details on actions). The actions available will depend on what entity you choose. An example could be that some of the actions for the player will be available for, say a Creeper. The "testfor [x] [y] [z]" means that it will test for if the entity is at a certain location. the "testfor [x] [y] [z] [xrad] [yrad] [zrad]" means that it will testfor an entity being in the area of a certain location. Actiondetails would describe the parameters of the action (see Actions for more details on Actiondetails).
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Entity's and their Actions:
Certain mobs will only be able to do certain actions, these are the actions that each mob can do (I'm not doing this part yet, because first I want to see if what I'm describing is even possible)