Tie::StdHandle - base class definitions for tied handles
    package NewHandle;
    require Tie::Handle;
    @ISA = qw(Tie::Handle);
    sub READ { ... }            # Provide a needed method
    sub TIEHANDLE { ... }       # Overrides inherited method
    package main;
    tie *FH, 'NewHandle';
The Tie::StdHandle package provide most methods for file handles described in perltie (the exceptions are UNTIE and DESTROY). It causes tied file handles to behave exactly like standard file handles and allow for selective overwriting of methods.