What is the suffix or prefix added to a line that auto-executes when, say F12, is pressed? I would like to assign exit to F12 and not have to press [Enter]

Thank you.

I think you're looking for the suffix '(backslash)n' This simulates hitting a return, for example at the end of a command to make it execute at the command line

So, to execute the command 'format', followed by a return, it would like like this:

format (backslash)n

Brian