Run»Restart (Shift+F5)

You can select restart from either the Run menu or the tool bar restart (rewind) button. This will reset CERUN back to the beginning as though you just started it. If you want to rerun CERUN using different settings then those currently set, use the file menu new job instead.

You can also use the keyboard shortcut Ctrl+Shift+F5 to restart without being prompted for confirmation

Stops processing and rewinds the MCD file to the start. All debugging breakpoints and settings are remembered.