Cutting between lettering on a cake that is attached. (Written in script). Eating cupcakes with writing on top of them.
דבר דבר (Dabair Davar): Requests in Davening on Shabbos;
the use of a thermometer on Shabbos;
Is One Allowed to Remove Fruits from a Branch That Was Broken Off Before Shabbos? Removing Grapes from the Stem on Shabbos;