What is sigil?

Some articles on sigil:

Sigil (comics)
... Sigil is an American comic book series published by CrossGen Entertainment from July 2000 to December 2003, ending at issue forty-two ... Sigil was one of the publisher's first four titles (the others are Mystic, Scion, and Meridian), a science fiction space opera, originally created by ... In 2011, Sigil was part of Marvel Comics' relaunch of the Crossgen Universe ...
Lindy Karsten - Character Details - Sigil-Bearer
... Sigil Location hand Lindy Karstan is one of the more unusual Sigil-bearers ... As a game designer she doesn't appear to have met many terrible challenges though as a virtual game player she seems to be skilled at leading a raiding guild ...
Sigil (Dungeons & Dragons) - In Other Media
... Sigil is also the setting for the 1999 video game Planescape Torment, in which you play the immortal "Nameless One." In an interview with RPGWatch, Chris ...
Sigil - Media
... Black Sigil Blade of the Exiled, a video game for the Nintendo DS platform Sigil (application), a cross platform, open-source application for the creation of ePub format e-books Sigil (comics ...