A command is basically a verb. Technically, a command is called an event (because it really is an Apple event, as discussed in Chapter 3). This chapter catalogues the built-in commands of the AppleScript languagethose not described elsewhere in this book. AppleScript defines very few commands of its own, leaving it to other applications to extend the language by defining further verbs as necessary.
(For the syntax of a command, see "Event Handlers" in Chapter 9; on how to use a command, see Chapter 11. For set, copy, and get, see "Assignment and Retrieval" in Chapter 7. For run, see "Run Handler" in Chapter 8. For error, see "Errors" in Chapter 19.)