The '/std/container' inheritable

inherits: OBJ
works well with: ENTERABLE, GETTABLE, LOCKABLE, OPENABLE, READABLE,
     WEARABLE

Summary:
The 'container' inheritable implements the concept of an object that
can hold other objects.  Support for relations other than 'in'
is also available.

Functions useful for configuring:
set_max_capacity(), set_objects(), set_preposition()
see also OBJ

New Functions:
container() - return 1
receive_object(object ob, string relation) - return zero if ob
    can be put into this object with the given relation (if
    relation is zero, use the main preposition for this object).
    capacity is updated, so the object should be moved in if this
    returns zero.  Non-zero results are specified by the include
    file <move.h>.
release_object(object ob) - returns zero if the object ob can
    be removed from this object.  capacity is updated if it
    succeeds, so the object should be moved out.
set_max_capacity(int) - sets the maximum ammount of mass this object
    can hold.
look_in(string relation) - returns a string giving the result of
    'look <relation> container'.  If relation is zero, the main
    preposition for this object is used.
set_objects(mapping) - The mapping should be of the form:
    ([ filename1 : number,
       filename2 : number ])
    It will cause a certain 'number' of clones of 'filename' to
    appear in the room when it is created, and every reset.
inventory_visible() - returns 1 if the contents of this object
    can be seen.
inventory_accessible() - returns 1 if the contents of this object
    can be touched, etc (consider a closed, transparent object).
introduce_contents() - The line printed before the contents list
    when the contents are printed recursively
can_take_from() - defaults to inventory accessible
can_put_in() - defaults to inventory_accessible()
set_preposition(string) - sets the main preposition of the object
    if none is set, it defaults to 'in'
query_prep() - returns the main preposition of the object

Overloaded Functions:
stat_me() - information about capacity and contents added.
ob_state() - containers with contents should not be grouped
query_mass() - include the capacity as well
long() - include the contents as well
reset() - clone the objects specified by set_objects()