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hi, I am a beginner in processing, I installed processing3, In the sketch blank screen I typed rect(250,200,150,100); and then clicked the run arrow, it opened up the canvas of size 2inch by 2inch but I can't see the rectangle. is it something I am missing? it was the same case when I type ellipse(250,200,150,100); if this is due to the default canvas size then can I set the canvas size I my case to see the rectangle and the ellipse as in the Hello tutorial. Thanks Somou