This app is used for teach to a student by drawing on it using stylus. You can use stylus to draw and use your finger to erase. If you don't have stylus, you can change the icon to use finger. When you use stylus mode, you can erase several parts by your finger. You can draw freely and also draw by our shape template such as circle, triangle, rectangle, ellipse, ball, cube, tube, straight line, and arrow. You can choose the line type, continues, dotted or dashed. You can change the color als