Dog-earring on Shabbos



While learning a Sefer/book on Shabbos, am I allowed to bend the corner of pages that I want to come back to after Shabbos to write some questions on comments in the margins? Or is bending the pages considered preparing on Shabbos for after Shabbos just like not washing the dishes?



It’s allowed.


ראה שש”כ פרק כח אות פט, וה”נ כאן. וראה גם כאן. ובנוגע לקיפול ראה שש”כ שם אות טז. וראה #16864