How to extrude a polygon with SketchBoard How to draw a rectangle with SketchBoard SketchBoard Video Tutorials Click to download or Right Click and choosing "Save Target As" Name of Video Tutorials Files **Please Download CODEC first codec Sorry, The demo files below are missing. Sketch Recognition with Intersection Checking Method demo1   demo2   demo3   demo4 Sketch Recognition with Parallel Checking Method demo1   demo2 Sketch Recognition with Time Difference Method demo1   demo2   demo3   demo4 Polygon Extrusion demo1 Displaying Shadow demo1 Saving sketch data as report demo1 Room Sketching demo1   demo2