Activity for mikiko

Ok this may be a silly question but its been bugging me because I can't find the answer. The letter "M" on response cards, what does it mean? That is where people put their names when responging right? So why the "M"?

So I bought my Maggie Sottero dress from a bridal store in my city back in September. Dress is supposed to be here mid Feb good rite? Yea until they tell you that they store is closing on Dec 19th because they are going out of business!!!! Yea they...