Possible Duplicate:
How to make small but important edits?

Say that you have the prototype scenario in Why the minimum 6 characters limit on edits: someone has written rm -rf / foo instead of rm -rf /foo as an answer to a question, and you want to edit that ASAP to help out the unwary copy-pasters. Say that the answer is otherwise correct. The current system will not let you make an edit of less than 6 characters, whitespace or deletions not counting a such.

Should you go out of your way to reformat and rephrase, or should you add a blurb to the end of the answer saying "changed this"? (which would be redundant with the edit message itself)...