Here you go.

1. Leading edge sweep offset (LESO): I thought that Root_chord = Tip_chord + LESO but I'm wrong...
The leading edge sweep offset is the distance from the leading edge of the root chord to the leading edge of the tip chord. Check out the article by Ron Van Putte, June1980, Model Aviation. It has all the equations.

http://www.angelfire.com/scifi2/wiza...es/Canards.zip

2. Static margin? Here is a very good definition of what the Static margin is. Better than I could by a long shot.

http://www.moneysmith.net/Soaring/soaring8.html

3. P? This is a multiplier derived from this equation also from the article above.

P = (R^2 + (R X T) + T^2)/(15(T + R))

I am not aware that it has a name.

4. DIH angle and the related in this frame (wing loc. etc.)

This is the dihedral angle of each wing panel from the horizontal.

Hope this helps. If not let me know.

Have a great day.

Alan