Copy and save multiple highlights in an srticle / document.

I am a long time Chrome user but decided to give Firefox a try for various reasons. 1 like Firefox's ability to highlight and add text comments to articles and documents. One feature lacking, or maybe it exists but I have not discovered it, would be the '''''ability to copy and save all highlights / commnents in an article / document''''' to subsequently use them as a summary, abstract, or digest of main points To preclude having to re read the entire document again And that's wanting to do so. There is a Chrome extension called '''Highlighter '''that Does just that , supports the copy all highlights.