The package looks for VTeX and sets the switch \ifvtex. In the presence of VTeX, the mode switches \ifvtexdvi, \ifvtexpdf and \ifvtexps are set; \ifvtexgex tells you whether GeX is operating.
The author is Heiko Oberdiek. The package is Copyright © 2001,2006,2007,2008 Heiko Oberdiek.
License: lppl Version: 1.4 Catalogued: 2008-11-18