The open source Zircon engine ("DarkPlaces Mark V Project") is a modification DarkPlaces engine with a mouse driven menu everywhere, ALT-ENTER fullscreen/windowed switching and 88 other enhancements to support user/mapper/mod coder ease-of-use and optional conveniences for those interested in a "1996 Quake" experience. "csqc_full_width_height 1" in console when running Arcane Dimensions at this time It is hoped that some/many/all of these enhancements will eventually make it into official DarkPlaces. The Zircon engine seeks to keep full compatibility with DarkPlaces so either engine can be used interchangeably.
Command host_timescale added, set to 0.5 for half-speed or 2.0 for double speed. This is largely a wrapper around an existing DarkPlaces cvar called "slowmo". This command gives a consistent name to the same function in other Quake engines and Valve. Added "tool_show_position 1" and "tool_show_angles 1" to display that information on-screen for map testing to more easily compare in world positions with the map editor in case of making map adjustments.