Magical Spells and Objects

How, exactly, does one cast a spell?

There are two ways, long and short. Assuming there is a spell named BOZBAR, you can type either "BOZBAR something" or "CAST BOZBAR AT/ON something." You can cast a few spells without any particular object in mind, in which case you can type either "BOZBAR" or "CAST BOZBAR."

---