CM 4th class

In the 4th class, I've learned useful add-on called wired-marker. It enables me to check the online document with various color. Even if I go to other pages, the data I edited is memorized, so I can check it at all times. It is useful when I work on my essay or even group work. If I check the other person's document online, everyone can easily check it! I really want to use this add-on :)