An operation that writes an autosave version of the file to a different location.
- macOS 10.7+
NSDocument subclass that overrides
autosaves to have the value
YES, this is used during autosaving of documents that have never been saved and therefore do not yet have a document file that can be overwritten during autosaving.
NSDocument may also pass
NSAutosave when invoking
write while duplicating or reverting a document.