Writing a Termination Handler
The latest version of this topic can be found at Writing a Termination Handler.
Unlike an exception handler, a termination handler is always executed, regardless of whether the protected block of code terminated normally. The sole purpose of the termination handler should be to ensure that resources, such as memory, handles, and files, are properly closed regardless of how a section of code finishes executing.
Termination handlers use the try-finally statement.