1:- module(sw,
    2    [ location/2
    3    , location/3
    4    , route/3
    5    , route/4
    6    ]
    7).    8
    9:- dynamic route/3.   10:- dynamic route/4.   11:- dynamic handler_url/2.   12:- multifile route/3.   13:- multifile route/4.   14:- multifile handler_url/2.

 location(Name, Url, Options) is det

assert http:location/3 ! location(Name, Url) is det. assert http:location/3 with default options

   20location(Name, Url) :-
   21    asserta((http:location(Name, Url, []))).
   22location(Name, Url, Options) :-
   23    asserta((http:location(Name, Url, Options)))