Actions are another special kind of functions. They don't have parameters and don't return a value, but will appear in the action pop-up list in WED's entity property panel. So actions can be assigned to entities through WED, and are automatically executed after level loading. Action names are limited to 20 characters. Besides that, there is no difference between functions and actions. This is our usual example for an entity action, which consists of just three instructions, and lets the entity rotate