The Software Update preference pane lets you specify whether Script Debugger should periodically go online to check for a more recent version of itself, and if so, how often.

Check Automatically

If checked, Software Update will run periodically. Options in the pop-up menu for how often Software Update should run are Daily, Weekly, and Monthly.

Automatically Download and Install Updates

If checked, then when Software Update detects an update, it will download and install it without first presenting a dialog.

Check Now

Run Software Update right now. This allows you to check without waiting for, or even enabling, automatic checking.