If you edit an extension while you are
working in Dreamweaver, you can reload the extensions so that Dreamweaver
recognizes the change.
(Windows) or Option-click (Macintosh) the Categories menu in the
title bar of the Insert panel.
Note: This option is not visible when
you are in Tabs mode. If you are in the Tabs mode, right click Panel
menu (top-left). Select Show as Menu, then Ctrl-click on Common
to get the menu with the Reload Extensions command.
Select Reload Extensions.
a multiuser operating system, edit copies of configuration files
in your user Configuration folder rather than editing master configuration
files. For more information, see Configuration folders and extensions