The Pause Running Action menu item and the main window's toolbar item named Debug, will cause an executing action to stop running and will display a debug panel. The Debug panel will be displayed at the start of the next statement to be executed. Note that it may take a few seconds before the command is recognized. A sound is played when the click is recognized and the request to break in is issued. Breakpoints and implicit exits will automatically be enabled.
Typically breakpoints in an action are only enabled when an action is run from an editor window or when Pause Running Action is selected. There may be other times when you want breakpoints to be initially enabled. For example when debugging an action running in the Batch Processor. Enabling Always Enable Breakpoints will cause breakpoints to be initially enabled whenever an action is run.