Disarming a Local Exception Handler
A local exception handler normally remains armed for the duration of the method that armed it.
The following syntax disarms a local exception handler of a specified exception class.
on exception-class do null;
This disarms the last (or most recently armed) exception handler for exceptions of the specified exception class.
Care should be taken when disarming a local exception handler. The search for a handler for exceptions of the specified class is not limited to the current method. If a suitable exception handler is not found in the current method, the exception handlers in calling methods are also checked. The