Give yourself ```tardis:tardis``` and place down away from other Tardises (the interior spawns directly above it, at Y = 30000). Right click on the exterior to teleport to the interior. Right click the demat lever to dematerialise. Right click it again to remat. Use **/set_nav** to bring up a coords dialog, enter **valid** coords ~~anything else will crash the game~~ This has been fixed.