Inline comments on doc pages

You can now comment on a specific piece of a doc, not just the whole page.

• Select and comment. Highlight a word, sentence, or passage in a page and a Comment button appears. The commented text stays gently highlighted so everyone can see what a thread is about.
• Threads with replies. Each highlight opens a thread in the side panel where the team can discuss and reply.
• Resolve when it's handled. One click resolves a thread and clears its highlight; resolved threads are kept, not deleted.
• Live. New comments, replies, and resolves show up for everyone reading the page in real time.