The big html programs (Dreamweaver, Expression Blend, etc) use a bar on top or bottom of the editor which displays a list of tags (buttons) based on where the text cursor is at in the DOM.
If you click directly on one of those buttons it highlights the opening/closing tags and content which they contain, in the editor. Perhaps some scaled-down version of this could be used. I also would like to see matching tags for all html, including html 5, but I understand CPU usage is an issue. Most html editors today represent the page internally as a DOM tree. -- <http://forum.pspad.com/read.php?2,50927,55399> PSPad freeware editor http://www.pspad.com
