====== Quick UV unwrap tutorial ======

O2PE includes an unwrap function (Surfaces -> Unwrap Structure ...) which should work pretty good an simple structures.

I use it this way:
  * Select the structure you want to unwrap and change to top view
  * Open a UV-editor
  * Select "Unwrap Structure ..." function and reselect you complete structure
  * In the UV-editor select "planar mapping" (tab-key) and select copy afterwards
  * In the O2 window select undo to undo the "Unwrap Structure ..."
  * In the UV-Editor select paste to regain the UV-mapping

Now you should have your structure more or less correct UV-mapped, you only need to move the UV-maps, so they do not overlap.

On more complex structures, use professional modeling software which has good UV tools.