A Boolean that indicates whether the user is allowed to edit the document.
- macOS 10.3+
YES if the receiver allows the user to edit the HTML document,
NO if it doesn’t.
You can change the receiver’s document programmatically regardless of this setting.
Normally, an HTML document is not editable unless the elements within the document are editable. This property provides a low-level way to make the contents of a
Web object editable without altering the document or DOM structure.