Answer: The mouse wheel can rotate the material 10, and the up/down keys can fine-tune the material line 1. The direction key can fine-tune the position of the material 1 pixel.

2. What if the material is too small to choose? What if the original scale is destroyed when zooming?

A: Hold down the Ctrl key to drag the material that is too small to select, and hold down the Alt key to enlarge it in the same proportion.

3. Are national cartoonists free? Will there be a charge in the future?

A: The software is permanently free in Chinese mainland, and paid for sale in Hong Kong, Macao and Taiwan and overseas according to local policies.