The simplest way to edit text in images you're using in PowerPoint is simply to overlay text on or near the image. To do this, click the "Insert" tab in the menu and then, in the Text area, click ...

Open the Microsoft PowerPoint presentation file that contains the text you want to include in a Microsoft Word document. Click the "Outline" tab in the upper left, above the slide thumbnails column.

Learn how to insert a watermark in Microsoft PowerPoint presentations. You can add a Draft text or an image watermark using the Slide Master.