-See the F<t/Sub-Op-Test> directory that implements a complete example.
+See the F<t/Sub-Op-LexicalSub> directory that implements a complete example.
+
+=head1 CAVEATS
+
+Preexistent definitions of a sub whose name is handled by L<Sub::Op> are restored at the end of the lexical scope in which the module is used.
+But if you define a sub in the scope of action of L<Sub::Op> with a name that is currently being replaced, the new declaration will be obliterated at the scope end.