Invalidates the calculated origin of the text container.
This method is invoked automatically; you should never need to invoke it directly. Usually called because the text view has been resized or the contents of the text container have changed.
Accessing Text System Objects
Replaces the text container for the group of text system objects containing the receiver, keeping the association between the receiver and its layout manager intact.
The empty space the receiver leaves around its associated text container.
The layout manager that lays out text for the receiver’s text container.