I sometimes write a comment which I realize would fit better as an edit, adding context or examples or better explanations to a question or answer. Or for that matter to make an edit with the content based on someone elses comment.
Then I would want to copy the content of the comment MathJax code and paste it in the edit.
Is there some way to do this now? If not, then I think maybe it could be a good feature.
Also: feel free to edit my tags as I am not as familiar with meta's tags as I am with math.SE.