I don't have the book, and I don't have much faith in writers, esp. when writing about NeXT, e.g., David Pogue writing in his column in _MacWorld_ and noting that Steve Jobs used a ThinkPad (correct) running Windows 95 (incorrect) since he couldn't be bothered to check that the ThinkPad model in question (I believe a 760C) was of course on the NeXTstep Intel compatibility list, and so, was of course running NeXTstep --- Lighthouse Design's Presentation.app was used as the model for Apple's Keynote.app
Wasn't PowerPoint also based on an application initially made for NeXT?
Will concede that David Pogue is a bit of a hack compared to the other biographers. I didn't think his recent book added much except for some stories from the Tim Cook era.