A sigil is a type of symbol used in magic. Sigil may also refer to: Sigil, a seal used to authenticate a document, a wrapper for one such as a modern envelope, or the cover of a container or package holding valuables or other objects Sigillion, a type of legal document publicly affirmed with a seal, usually of lead Arts and entertainment Sigil (comics), a comic book from CrossGen Sigil (Dungeons & Dragons), a city in the Dungeons & Dragons roleplaying game Sigil (mod), a 2019 Doom mod created by John Romero Sigil, a 2003 album by Cauda Pavonis Sigil, a 2006 album by Nuru Kane Computing Sigil (application), free, open-source editing software for e-books in the EPUB format Sigil (computer programming), a symbol affixed to a variable name, showing the variable's datatype or scope Other uses Polygonatum, a genus of flowering plants Sigil Games Online, a computer software company based in Carlsbad, California, United States Sigil Collective, the name of an art/architecture collective based in Beirut and New York City founded by Salim al-Kadi, Khaled Malas, Alfred Tarazi and Jana Traboulsi See also Black Sigil: Blade of the Exiled, a role-playing video game for the Nintendo DS developed by Studio Archcraft Scribal abbreviation or siglum, an abbreviation used as critical apparatus by ancient and medieval scribes writing in various languages, including Latin, Greek, Old English and Old Norse