Sometimes, as in dictionaries or other reference works in which it is important for the reader to know whether an end-of-line hyphen is a permanent one or not, a different symbol, such as -, is used when words are divided: con- trary A tilde (~) is also occasionally used: con~ trary In copy to be keyed, add a ???close up??? mark (see Appendix Proofreading marks) to any permanent (hard) hyphen that