How can I stop external links??

This should do what you want:

html=<a href="http://www.blitzbasic.com/bpdocs/command.php?name=CreateHTMLView" target="_blank">CreateHtmlView</a>( 0,45,ClientWidth(window),ClientHeight(window),window, 3 ) ; note the style flag at the end

..but it doesn't fully unfortunately. I take this to be a bug in B+, so let me know how you get on.

You should be able to use that in conjunction with HtmlViewEventURL.