User-facing documentation for the rebuilt web reader (§6.5 of the app
handoff): swipe-to-page / tap-for-menu touch navigation, long-press word
selection with drag extension and handles, the selection popover (color
dots, notes with save-together-on-create, copy incl. plain-HTTP LAN,
edit/delete by tapping a painted highlight), below-the-selection popover
placement rationale, PDF/comic behavior, and annotations drawer.
Linked from the user documentation portal and the docs index quick
links / quick-find tables.