CHAPTER 3
List of Room2 Properties:

   P_MAP          <name>[:<xpos>,<ypos>]  define a map [and optional position]
   P_NO_FIGHT     <0|1|str>               fighting possible no/yes
   P_NO_MAGIC     <0|1|str>               no magic allowed (standard spells)
   P_UNDER_WATER  <0|1>                   this room is under water (NOT depth)
   P_AREA         <str>                   what area we are in (forest, desert)

   Changed/modified/modernised in August 2016.

See also: build/properties, room/query_prop, room/set_prop