A Boolean value indicating whether the document’s file is completely loaded into memory.
- macOS 10.7+
YES if the document’s entire file is loaded into memory; otherwise
The default value of this property is
YES, which signifies that the entire file is loaded into memory. You can override this property to return
NO if additional data needs to be read from the file.
NSDocument may use this value to do things like prevent volume ejection or warn the user when a partially loaded file disappears from the file system.