Confluence is what I was thinking of when he was talking about cross-reference! Paste a page link in and it continues to work even when the page moves or is ret

Confluence is what I was thinking of when he was talking about cross-reference! Paste a page link in and it continues to work even when the page moves or is retitled. Embed a section of one page in another page. Macros that collect all pages with certain parents or properties. I adore Confluence and it is semantic -- header levels, "tips" vs "warnings", and expandos to signify "stuff you don't need to read right now".