yea, but that's only basic detuning for a sharpened edge so it doesn't hook when carving up the groomers...
for park skiing, especially if you do a lot of rails and boxes or just enjoy a very forgiving ski, don't forget to detune underfoot as well!
not only will you slide smoother on rails and minimize the risk of catching an edge, but also you'll minimize the risk of edge cracking; a dull edge can take much harder impacts than a sharp edge.
most people i know don't bother doing anything about their edges and they just rail with their new skis untill the edges are dulled.
if you want to quickly break in your ski, you can do it like in the guide rowen posted(except you detune the whole running length, especially underfoot), or if you don't have those tools or don't care very much or don't have much time; just pick up a rock and run it along your edge to break the sharp corner.
