A "×" symbol (a cross similar to the letter "x") in a box.
<p>Note that the filename is "☒", which is the Unicode character for the symbol in question (U+2612).  If your computer displays something like a question mark ("?") instead, then you have a browser problem.  But don't worry.  You can still copy and paste <b><tt>[[File:☒.svg]]</tt></b> into an article and it will appear correctly.
</p>
Don't be deceived by the tiny size of this image.  It is fully scalable.
<a href="//commons.wikimedia.org/wiki/User:Erin_Silversmith" title="User:Erin Silversmith">Erin Silversmith</a>
2006-08-17
<span class="int-own-work" lang="en">Own work</span>