Script Debugger can run (and debug) multiple scripts simultaneously. To execute (run) a script:

• Choose Script > Execute.

• Or, click the Execute button in the toolbar.

If the script needs compiling, it is automatically compiled first. If there is a compilation error, the script won’t run.

While a script is running:

• A circular progress indicator spins at the right end of the title bar.

• Whenever an Apple event has been sent to an application but the application has not yet replied, the application’s icon appears at the right end of the title bar. If the Apple event is in danger of timing out, the circular progress indicator changes to a “pie” icon tracking the remaining time.

• In the toolbar, Execute is replaced by Stop.

  You can click Stop, or choose Script > Stop, to interrupt execution.

• In the Script menu, the Execute menu item changes to Running, is disabled, and has a check mark. Script > Stop is enabled.

  Additionally, if the script is in debug mode, then when the script is executing, the Pause button appears in the toolbar, and Script > Pause is enabled.

If the script runs to completion with no runtime error, there is usually a result.

You can run the frontmost script even when you’re in a different application:

• Use the Mini Debugger floating window. It displays and lets you control the frontmost script.

• Script Debugger’s Dock menu (Control-click its Dock icon) contains Execute and Stop menu items that operate on the frontmost script.

Script Debugger helps you run individual handlers in a script.