System_file;

Attribute animate;
Attribute clothing;
Attribute concealed;
Attribute container;
Attribute door;
Attribute edible;
Attribute enterable;
Attribute female;
Attribute general;
Attribute light;
Attribute lockable;
Attribute locked;
Attribute moved;
Attribute on;
Attribute open;
Attribute openable;
Attribute proper;
Attribute scenery;
Attribute scored;
Attribute static;
Attribute supporter;
Attribute switchable;
Attribute talkable;
Attribute transparent;
Attribute visited;
Attribute workflag;
Attribute worn;

Attribute absent alias female;      !  Please, no psychoanalysis

Property additive before $ffff;
Property additive after  $ffff;
Property additive life   $ffff;

Property long n_to;  Property long s_to; !  Slightly wastefully, these are
Property long e_to;  Property long w_to; !  long (they might be routines)
Property long ne_to; Property long se_to;
Property long nw_to; Property long sw_to;
Property long u_to;  Property long d_to;
Property long in_to; Property long out_to;

Property door_to     alias n_to;     !  For economy: these properties are
Property when_closed alias s_to;     !  used only by objects which
Property with_key    alias e_to;     !  aren't rooms
Property door_dir    alias w_to;
Property invent      alias u_to;
Property plural      alias d_to;
Property add_to_scope alias se_to;
Property list_together alias sw_to;
Property react_before alias ne_to;
Property react_after  alias nw_to;
Property grammar     alias in_to;
Property orders      alias out_to;

Property long initial;
Property when_open   alias initial;
Property when_on     alias initial;
Property when_off    alias when_closed;
Property long description;
Property additive describe $ffff;
Property article "a";

Property cant_go "You can't go that way.";

Property long found_in;         !  For fiddly reasons this can't alias

Property long time_left;
Property long number;
Property additive time_out $ffff;
Property daemon alias time_out;
Property additive each_turn $ffff;

Property capacity 100;

Property long short_name 0;
Property long parse_name 0;

! The following definitions, commented out, define pre-Inform 5.2 and now
! obselete names as aliases for the standard names:

! Property preroutine alias before; Property desc        alias description;
! Property postroutine alias after; Property longdesc    alias description;
! Property liferoutine alias life;  Property timeleft    alias time_left;
! Property initpos     alias initial;
! Property portalto    alias door_to;
! Property closedpos   alias when_closed;
! Property dirprop     alias door_dir;
! Property cantgo      alias cant_go;
! Attribute portal alias door;