I'm not sure if this is by design or a bug. I remember I used to be able to add points, but now it's just greyed out.
If I missed a report of this already I apologize.
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When you see the polygons just right click on the red dot and add a new point <img src="smileys/smiley20.gif" border="0" align="middle" /> It's greyed out if you click somewhere else.
OK, I feel like an idiot. Thanks. :)