How do you edit Microsoft PowerPoint files?
Programs like PowerPoint are meant to reduce thoughts to the barest form of expression: bullet points and slogans. Elegance is completely beside the point. For the same reason, Wordy editors aim for good consistency and proper wording.
Since PowerPoint doesn’t have Word’s Track Changes feature, editors will make changes directly on the slide. You can use PowerPoint’s “Compare” function to compare the original and edited presentation. If relevant, editors can also leave comments on a slide, using the “Comment” feature.
See also “How can I view the changes in a Microsoft PowerPoint file?”.