Manual:DIL Manual/extraptr

The extraptr has the following fields:

   extraptr:
      'names'        :stringlist (RW)
         names is a list of strings of names, that the extra description matches on.
      'descr'        :string (RW)
         descr is the contents of the extra description.
      'next'         :extraptr (RO)
         next is the next extra description in a list.
      'vals'        :intlist (RW)
         vals is a list of integer values attached to this extra.

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The unitptr is the key structure in the MUD, containing any kind of the
following subtypes:

   object      : a normal object, a sword, a vail, etc.
   room        : a room, location or the like.
   pc          : a playing character.
   npc         : a non playing character (mobile, monster, etc)

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Extraptr:

  Extra descriptions, quests structures, etc can be searched and manipulated
using variables of this type. There is no way to declare static structures of
this type in DIL programs. Lists of extra descriptions are easily searched with
the 'in' operator (See below).  Extraptr variables are 'volatile', and thus
cleared whenever there is a possibility that they are rendered unusable.