Modula-3: Try finally statements

# Try Finally

A statement of the form:

        TRY S_1 FINALLY S_2 END

executes statement `S_1` and then statement `S_2`. If the outcome of `S_1` is normal, the `TRY` statement is equivalent to `S_1; S_2`. If the outcome of `S_1` is an exception and the outcome of `S_2` is normal, the exception from `S_1` is re-raised after `S_2` is executed. If both outcomes are exceptions, the outcome of the `TRY` is the exception from `S_2`.

    Last modified on Wed Apr  3 09:38:53 PST 1996 by heydon
         modified on Mon Apr 18 14:08:09 PDT 1994 by kalsow