Hi Raymond,
sorry, I mistyped, I did put an equal sign.
When I enter "=if((A1=7), A1, 0" in B1, it writes "=if((A1=7), A1, 0" in the cell. It does not treat it as a function...
Also, if I make a data base listing e.g. all the rectangles of the drawing, if I enter =Area, it returns the area of each listed rectangle, but if I ask for =Area(B1>100), it does not return (as I expected) the area of the corresponding rectangle if B1 is superior to 100, but it does return "true" or "false" according to whether or not my condition is fullfiled...