I'm developing an application in English language but my English is not very good.
The application consists in to load a text file, specify a prefix and a suffix, then when the file is loaded and the prefix/suffix are set, the user needs to click in a button to prefix and suffix all the lines of the textfile.
The problem is I don't know how to name the button to perform the action of Prefix and Suffix the text.
To understand it better, if I have an application which cuts some text, then the button name to perform the action would be "Cut the text", if I have an application to copy some text, the button name would be "Copy the text"
In this case I don't know which is the correct verb to Prefix and Suffix, maybe the correct verb would be "Affix the text"?
I'm from Spain. In Spanish there exist a verb to Prefix, but I think doesn't exist any verb to Suffix a word, and neither to Prefix and Suffix at the same time, but maybe I'm wrong.
Screenshot to understand the scenario
Full resolution: http://i.stack.imgur.com/AI2ri.png