My photoreading objectives are usually many questions since the beginning of the photoreading process on the prepare step (usually about technical books).
I like to write this questions on a paper to not forget them later and to maintain my focus.
After previewing (by just reading the table of contents) more questions come to my mind and they become part of my objectives to. Is it good to write this questions just after previewing or is it better to write more questions only on the postview step?