Movement Codes
The reason for a change of editing focus among text fields.
Overview
These constants are the possible values for the NSTextMovement key of the didEndEditingNotification userInfo dictionary. The field editor makes sure that these are the values sent when the user presses the Tab, Backtab, or Return key while editing, in essence describing why the user is leaving the field. The control then uses this information to decide where to send focus next.