They have forked tails and some have elaborate tail decorations. They have long forked tails, and some Asian species have elaborate tail decorations. The caudal fin is squarish and only mildly forked. The caudal fin is forked with 9 rays. It also has a long, yellow, deeply forked tongue. Like all monitors, they have forked tongues, with highly developed olfactory properties. Its tail was forked, like that of whales or dugongs. Other spears had forked blades, several spear-points, and numerous other innovations. In August 2005 Claws Mail forked completely from Sylpheed. The spot is often forked, facing posteriorly. Some species even have forked hemipenes (each hemipenis has two tips). In 2004, Dragonfly BSD forked from FreeBSD. Following that, OpenSolaris was forked as illumos and is alive through several illumos distributions. Meanwhile, the MATE desktop environment had also been forked from GNOME 2. Many standard recorder fingerings are forked fingerings.