Rachis Rachis Rachis is a biological term for a main axis or "shaft" (from the Greek "ράχις, backbone, spine"). In vertebrates a "rachis" can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the "rachis" usually forms the supporting axis of the body and is then called the spine or vertebral column. "Rachis" can also mean the central shaft of pennaceous feathers. In the gonad of the invertebrate nematode "C. elegans", a "rachis" is the central cell-free core or axis of the gonadal arm of both adult males and hermaphrodites where the germ cells have
Calamus (DTP) for its support for automatic kerning even where adjacent characters are set in different fonts or at different sizes. Its high modularity offers features for almost every purpose in desktop publishing. Calamus also was one of the first DTP apps to support real virtual objects and frames, nondestructive vector masks, and editable PS/PDF import. Its (adjustable) measurement base of 1/10,000mm allows accurate positioning of elements. Calamus was ported to Windows by MGI Software and was released as Calamus 95. The current version of Calamus is Calamus SL 2015, also available as SLC 2015 (complete edition with all additional modules) and