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' => run outer entry outer entry inner outer done =>
When executed outside a script a warning is written. Following commands are not executed.
=> echo first; exit; echo last first exit not allowed from main input shell. =>
$? is always set to 0 (true).