History

true if the document was last saved at the current point in the history. i.e. it returns true immediately after saved is called, but also returns true if changes are made, and then undo is performed to get back to the point that saved was called.

The time between changes in milliseconds, where changes can be merged. The default is 1 second (1000 milliseconds). i.e. if we type with less than 1 second between keystrokes, the changes will be merged to form a single batch, so undo/redo will not operate 1 character at a time.

Begins a new Batch, runs the block, and then closes the Batch.

Updates isSavedProperty.