The Room attribute "reset_volume" defines a volume where if the user enters it, they are brought back to the entrance of the room. This is most commonly used to reset a user who has "fallen" from the geometry of the room and needs to be reset. It is defined by two 3D endpoints of a cuboid/axis-aligned bounding box. The default value effectively acts as an infinite volume below y=-100, so for Rooms where the user is expected to go below this y value, the reset volume should be redefined accordingly.
reset_volume - (default "-FLT_MAX -FLT_MAX -FLT_MAX FLT_MAX -100.0f FLT_MAX", where FLT_MAX is the largest representable floating point value) Set the endpoints of two opposite corners of the reset volume (an axis-aligned bounding box with format "x0 y0 z0 x1 y1 z1").
An example which users corner points (-1000,-500,-1000) and (1000,0,1000):
http://janusvr.com/docs/build/roomtag/index.html#Room