[ipad] windows properties
very very very good work on this app, congrats!
When opening the graphic properties of a window, it seems that the Calc-window properties are always displayed, even if no calc window is open.
-The anaglyph view button is shown, but not efficient.
- Algebra window : it's difficult to tap at the left of an objet Line (which text is long due to the equation) to show or hide it: the Line is often selected instead.