The New Yorker magazine has a formal in-house style that includes using diaeresis marks over repeating vowels, spelling out numbers and professional sports leagues, and using certain uncommon spellings. The magazine's signature display typeface is Irvin, created by Rea Irvin, while the body text is set in Adobe Caslon. Titles of plays and books are set off in quotation marks rather than italics. When referring to publications with locations in their names, only the non-location portion is italicized.