Add a user to the wheel group in OSX

Why are these things always so weird? Someday I'll understand why OSX is set up that way. And on that day, I'll probably weep.

<blockquote>$ sudo /usr/bin/dscl . -append /groups/wheel GroupMembership <em>username</em> <p style="padding-left: 30px;"></p> </blockquote>

This was found here : https://discussions.apple.com/thread/1230828?start=0&amp;tstart=0