The term 'Library Reminder' can be broken down into two crossword solutions: SHH (3 letters) and LATENOTICE (10 letters). SHH is an acronym for 'Silent, Here, Help' and is used to remind library patrons to be quiet and respectful of others. LATENOTICE is a warning to library patrons that they may be charged a late fee if they do not return their books on time. Both of these terms are used to ensure that library patrons are aware of the rules and regulations of the library.