# Is Action Defined

This statement is to test if an action exists. The action test state will be set to true if it exists, otherwise it will be set to false. This statement cannot test for the definition of inline actions.

The statement can be useful when you want to provide extensibility to an action via one or more possibly defined actions.

You can use any of the escape sequences described in Escape Sequences.

The function is only executed once per set of files while executing stepwise.