Secondly, after opening the file function menu, click the options menu.
3. Then open the PowerPoint Options dialog box. In the Customize Ribbon Options, select Developer, and then click OK.
4. Then I returned to the presentation and found the "Development Tools" tab in the toolbar. On the Developer tab, click the text box (ActiveX control) button.
5. Then drag the mouse on the slide to draw a text box control.
6. Finally, put the slide show, and you can enter the content into the text box if you find it. Note: The content will be saved in the presentation. As long as the presentation is saved, the content will be saved.