Notjohn, here is an image of how I set up the clip bar. It acts as a whole new bar that can hold all kinds of custom commands which get inserted wherever the cursor is located.
The only differences I've noted is that when in code view the clip (ex: "\1") will surround selected text with double quotes, while if you are in the find or replace fields it will replace the selected text with exactly "\1" .
eg.
the clip: <em>\1</em>
In code view with
<p> </p>
selected, the clip will produce:
<em><p> </p></em> (edit - yes I know this is incorrect - just showing that the <em> tags will surround whatever is selected)
In the find or replace fields anything selected will be
replaced by:
<em>\1</em>