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Hi I am new to processing and just downloaded version 3.1 - I am trying to follow the tutorials on hello processing and ran the rect (250, 200, 150, 100); line but when the drawing canvas opens it is very small, cant be resized, and I dont see the rectangle in the canvas window. Can anyone give me a pointer as to what might be wrong ? also how do you toggle the rulers ? - cant see any obvious way to do that