Based on a request from a teacher, I have implemented an experimental large fonts feature for readers who can’t quite see the text in our normal format. To activate the feature press the z key (that’s zed) while reading a book. It will cycle through three font sizes and then back to normal. In this mode you’ll first the the normal page layout, then when you go to next you’ll see a version of the same page with large fonts and a small picture. Selecting next again will take you to the next page again in normal format. I think of it as a bit like the book doubling in length with pages devoted to pictures and pages devoted to text.
I’d appreciate your feedback on this design. How does it work for your students? What could be improved?