Proposed feature for Safari: Markup.

Highlights and notes, with Pencil support, as an overlay atop the original page. Personal, not public, but synced via iCloud. I’d use this every day.

@gruber it could piggyback off of the Notes improvements. Make Markup an SDK to integrate to all apps? It would probably help a lot of students who don’t want to go all-in on Obsidian or other PKM tools.
@bryanculver Oh, definitely, would play off the features Apple already has for Notes and for Markup in images.