Here's a link Rated 4 out of 5 stars
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Hope this helps.
Still haven't figured out why it fails on framed pages. One clue may be found in that if, after loading such a page, I go into add-ons (ctrl-shift-A), disable Prostetnic Highlighter, and then re-enable it, when I go back to the tab with the framed page in it, it does show the menu item and does highlight, but does not seem to remember the highlight when the page is refreshed, after which it again stops working. Back to the builder dashboard...