Words that trigger action

A small number of the vocabulary words that Asa has learned (see my blog of 5 November 2015) should trigger action (see chapter 1 of my book Twelve Papers, www.robert-w-jones.com, section on learning protolanguage).  Words like stop, turn, fast, slow, leave, move, lift, drop, kick, and carry.  Asa has been learning a few more like look, walk, run, and jump. But how do we tell Asa when we want it to act and when we don't?  With humans, how loud the command is may be the deciding factor.  If written, than an exclamation point might be used as the trigger.  These could be implemented in Asa, but should they be?