The fol­low­ing single-sheet ref­er­ence page was cre­ated for ARG friends and coworkers–people that would like to con­tribute to edit­ing a wiki, but who are a lit­tle over­whelmed by the for­mat­ting.  It is a quick-reference of the com­monly used markup styles–including links, lists, bold, italic, and others–that can be printed on a sin­gle page and left next to your com­puter.  It is not intended to be a com­plete ref­er­ence because there are plenty of those already avail­able (includ­ing one on the Medi­aWiki site itself.)

http://netninja.org/files/wikisheet/wikisheet.pdf