To edit a detail item, you can use one of the following commands.
Keyboard Scroll to the detail item you want to edit and press the Enter key
Context Menu Double left click the grid on the detail item you want to edit.
Cancel a Detail Item Edit
If you're editing a detail item and would like to cancel any changes you have made to the detail item that is being edited click the Cancel button.
A Confirm dialog will display "This will discard changes to the detail. Lose your detail changes?". Click Yes to continue with the change cancellation. The detail item will return to its' original value. If the detail being edited is new, then the detail will simply be blanked out.
If you're not editing a detail item, clicking the "Cancel" button will allow you to cancel any other changes you have made to the current entry.