As follows:

Operating device: Dell Lingyue 74

Operating system: win1

Operating software: Word Document 217

1. Open the Word document that needs to be bolded.

2. Click the left mouse button and press and drag the cursor for a long time to select the text to be bold.

3. Click the "Start" option in the toolbar at the top of the page and select the "Bold" button marked below.

4. After clicking, the previously selected text can be displayed in bold.