Hi Doug
Unless you have thousands and thousands of entries, it's
usually pretty easy to simply click the first entry so it is
selected, then just press the Delete key and hold it down. They
rapidly are deleted.
If you have tons of them, it may be easier to hunt down and
destroy the file holding them. I would close RoboHelp before doing
this, just to be sure. Then look at your project location using
Windows Explorer. The file you are looking for will have the same
name as your project and end in .HHK (HTML Help Keywords).
Keep in mind that clobbering your .HHK file won't banish any
keywords that are assigned directly to topics (if you have any).
Cheers... Rick