a into the receiver’s text at the insertion point if there is one, otherwise replacing the selection.
- macOS 10.0–10.11Deprecated
The inserted text is assigned the current typing attributes.
This method is the entry point for inserting text typed by the user and is generally not suitable for other purposes. Programmatic modification of the text is best done by operating on the text storage directly. Because this method pertains to the actions of the user, the text view must be editable for the insertion to work.