How to clean up formatting in IMPERAVI?

Question

WYSIWYG

Good day!
Has anyone come across the squeal editor imperavi? Or rather, there could be such a task as cleaning the formatting. The bottom line is that when we copy some text, for example, from the same Word, the editor displays the formatting that was in this Word. I wrote a similarity of a plug-in that "clears" the formatting - I added a button, by clicking on which, on the inserted text, I go through a bunch of regular expressions. Is it possible to do something so that only the selected piece of text can be "formatted". Here is such a question))