You are right about the mapped controls. It was your use of the term 'similar' that led to the suggestion. If you meant 'same' then the basic principle still holds good. you can insert autotext building blocks of the fixed texts, without the mapped controls, in the same way.
Or you could perhaps save the texts as separate documents and insert them - see
http://www.gmayor.com/Boiler.htm which demonstrates a way of doing that.