We'll create fresh WordPress site with pattern post manager installed. You have 20 minutes to test the plugin after that site we'll be deleted.
It is a plug-in that inserts registered template text into a visual editor such as posting, fixed page, custom posting.
The registered formal sentence is set as a list box in the toolbar of posting or fixed page visual editor, and the selected fixed form sentence is inserted in the editor.
After inserting into an article, even if you change the original fixed form, the article will not change.