1GENERAL: break, exit, quit, return - exit from loops, macros, and from the program

Usage: break
       exit
       quit
       return

Within macros these commands have the following effects:
break   exits from the current do-loop.
exit    returns from a macro to interactive input. 
quit    exits from the program.
return  exits from the current macro and returns to the calling macro or,
        if the macro was called interactively, to interactive input.

In interactive mode, "exit", "quit" and "return" exit from the program, and
"break" is not allowed, because loops are only allowed within macros.