R2_XORPEN Pixel is a combination of the colors that are in the pen or in the screen, but not in both (final pixel = pen XOR screen pixel).

• 像素是画笔或屏幕的颜色的组合，但不是两者中都有的。就是画笔颜色和屏幕颜色组合起来，再去除相同的部分。