First, open word and click' Custom Quick Access Toolbar' in the upper left corner of the document, as shown in the figure below.

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Please click to enter a picture description.

Then select "Other Commands"

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1. Replace "Common Commands" with "All Commands"

2. Find "pen" in all commands.

3. Select "Add"

4. Finally, click OK to save.

draw

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Select the brush and favorite color in the shortcut in the upper left corner, and then you can write at will.

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Please click to enter a picture description.