Saved as you write
There’s no Save to remember. Everything is saved as you write, each save whole or not at all, so the file never holds half a change. If a save ever fails (the disk is full, the file is read-only, its drive is gone), the toolbar says Not Saved, says why in plain words, and offers Save As…, while it keeps trying on its own.
Undo
⌘ZCtrl+Z takes back changes to the book, and the Edit menu says what it will undo, by name: Undo Move “The Gate” to Archive. Undo is built never to destroy your prose: words written after a change survive when the change is undone.
The Archive
Removing something is immediate, and a notice offers Undo. Anything with words in it (a scene, a chapter, a character, a topic on a character’s page) goes to the Archive, which keeps where it came from. Choose one there to see what it holds before deciding; Restore puts it back exactly where it was, and says where.
Only Delete Forever and Empty Archive are for good. They ask first, and say exactly what they’ll take.
Backups
A copy of each book is kept outside it, in a folder you choose (Settings › Backups; at first, Documents › Asterysm › Backups): as the book opens, every half hour while it changes, and as it closes. The newest five are kept, then one a day for two weeks, then one a week for two months.
File › Backups lists them by day, and opens any as a new project beside this one, leaving the book as it is.
One file
A project is one file, Title.asterysm, holding the whole book: its manuscript, its plan, every scene’s history, and its versions. To work on it on another computer, or to send it to someone, copy the file: it opens there with everything in it.