1. Open a PPT and show it.
2. During the screening, right-click the mouse and click [Pointer Options].
3. In the pointer option, the default is the mouse arrow, we just click on [Brush].
4. After completion, we can tick off the PPT.
5. Of course, you can also change the color of the brush.
6. As shown in the picture, it was replaced with a yellow brush.
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