Drawing of elliptic objects

Dear friends,

I added short information about drawing of elliptic objects with JOSM:

http://wiki.openstreetmap.org/wiki/Roof_modelling#Drawing_and_rotation_of_ellipse_with_JOSM

Regarding PlugIn CAD Tools: if anyone of you is interested in adding of some now functions, please write me.
I have specified this plugIn but some elements are still not implemented and the mapper cetusek who implemented there some functions is recently not more avaiable.