A Boolean value that indicates whether the document archives previously saved versions of the document.
SDK
Framework
var keepBackupFile: Bool { get }
The default value of this property is false, which causes each new save operation to replace the document's on-disk content. If you override this method and return true, a save operation saves the document's previous contents in a backup file before saving the current contents.
var fileThe location of the document’s on-disk representation.
var isA Boolean value that indicates whether the document’s file is completely loaded into memory.
var fileThe last-known modification date of the document’s on-disk representation.
var isA Boolean value that indicates whether the document is a draft that the user has not yet saved.
var fileThe name of the document type, as specified in the app’s information property-list file.
var isA Boolean value that indicates whether the document has unsaved changes.
var isA Boolean value that indicates whether the document is in read-only mode.