Selection Rectangle on Mac
How do I draw a selection rectangle in Geogebra 6 on a mac? The manual says how to do it with a mouse or a touchscreeen, but I have a trackpad. The analogous action to the mouse instructions (secondary click) doesn't draw a rectangle, it zooms. I've tried all of shift, control, option commmand wth 1, 2 and 3- fingers on the pad withiout success.