Currently saving the worksheet and removing the output can only
be done via the menu. It would be nice if these tasks could be performed
using commands. If this would possible, one could for example start the worksheet
and never loose any programming after rerunning the script.
Furhtermore, a hard break statement stopping completely the excution of
the worksheet would be nice. If the current break break statement is executed, the result is to exit from the innermost repetition (for/while/do) statement within which it occurs. After exit, execution proceeds, with the first statement following the repetition statement.