philippe carette wrote: > I find a respond for my #1 question : center button, and Up-down move > move of the mouse ;o)). > You can also do 1) Ctrl+left mouse click 2) move the mouse to set the size of the zoom area 3) left mouse click Christophe -- Christophe A. Geuzaine Applied and Computational Mathematics, Caltech geuzaine at acm.caltech.edu - http://geuz.org