# Typos

Is a typo a slip of the finger, or merely a simple spelling mistake? (Can a consistent spelling mistake be classified a typo?) Merrian-Webster's <a href="http://www.m-w.com/cgi-bin/dictionary?typo">says</a> merely that it's "an error ... in typed or typeset material"; given that it doesn't even specify that this error has to be small, this is hardly complete.