Introduction - If you have any usage issues, please Google them yourself
Graphics rendering: graphics including point, line, arc, circle, ellipse, polygon and so on. The user through a menu or toolbar button to choose two ways to draw the graphics, you can see from the status bar graph type of the current drawn. Users to the linear parameters of the graphic elements, filling parameter. Graphics editor: support revocation, recovery, and graphics drawn on the current duplication of operations. Graphics file reading and writing: the ability to draw the graphics are saved to a file and the file can be read.