| The exit command terminates a script started via the run or source command. |
| If scripts are nested, only the innermost script is left. |
| => setenv inner 'echo entry inner; exit; echo inner done' |
| => setenv outer 'echo entry outer; run inner; echo outer done' |
| When executed outside a script a warning is written. Following commands are not |
| => echo first; exit; echo last |
| exit not allowed from main input shell. |
| $? is default set to 0 (true). In case zero or positive integer parameter |
| is passed to the command, the return value is the parameter value. In case |
| negative integer parameter is passed to the command, the return value is 0. |