Other issues to watch out for when food, wax, etc. is attached to the part where there is no letters, numbers, etc.
ודבר דבר (Dabair Davar): Hinting to Someone to Do an Action After Shabbos Which Is Not Allowed to Be Done on Shabbos;
A deeper understanding into the 5 conditions needed to fold something on Shabbos and one should be careful to fold their TALIS on Motzi...
Is One Allowed to Prepare from One Shabbos to the Next Shabbos?;