Giant Vermin spell

[The_Magician]

The description of this spell says you can only give simple commands to the giant vermin, and it gives examples such as: "attack", "defend", "stop", etc. It never says the commands have to be one word only, but I am forced to believe that's the extent of their complexity. If that is so, how can I order the Giant Vermin to attack the enemy? Am I able to choose a target to be attacked, or at least a general direction?

 

[dcollins]

I assume by pointing. Rather like an attack dog might be used. (Same assumption I make for the summon monster spells.)