The four verbs

ROLL (⌘⏎) turns a scrap into a task; the scrap itself stays where it was on the page as a rolled scar, so the page keeps the record of where it went. Each list item is its own scrap (so one task each); to roll a whole list at once, select across it — a selection rolls one task per line. Tasks are light: no dates, no projects. Check them, reorder them, or unroll one (↩) to send it back to the page.

FILE (⇧⌘F) keeps a scrap for good in the cabinet — titled, tagged, searchable, and sealed. Filing copies it out; the original stays put as a filed scar, so the page keeps the record that it moved to the cabinet.

GATHER pulls scraps that belong together — everything wearing one #tag — into a single block at the spot you're writing now, under a dated heading. Trigger it from ⌘K: type a #tag, then gather. Each origin stays exactly where it was as a ⤿ gathered scar, so the page still shows where every piece came from; the gathered copies land as fresh live scraps you can keep editing, rolling, or filing.

SCRATCH (hold ⌫) scratches out a scrap that was only ever worth writing once, or turned out wrong. The whole scrap stays where it was, struck through — scratching it out is a decision you made, and the scar keeps the record of it. It's not a way to free up the page: the scar keeps the full space of what was there, so the book keeps filling.

No — nothing is ever removed or shrunk. The whole scrap stays right where it was, with a marker on its first line: ↑ rolled, → filed, ⤿ gathered, ⁓ scratched. It keeps its full footprint of ink, and that's the point: disposing never makes room, so the book keeps filling and always ends. A shelved book is the whole record — what you wrote, and what became of it. You can't edit or delete a scar; it's permanent.

Yes. Select any text and the verbs act on exactly what you highlighted. With nothing selected, they act on the scrap your cursor is in.

Yes — that's FERRY, an outbound fifth verb. Where the four verbs keep a scrap inside your notebook, Ferry carries it onward to another app. It only appears once you've connected a destination. See Ferry — sending onward.