code: function FidonetURL(initialString){
     if(!( this instanceof FidonetURL )){
        return new FidonetURL(initialString);
     }
  
     parseFundamentalSections.call(this, initialString);
     parseOptionalPart.call(this);
     parseRequiredPart.call(this);
  }
docs: The FGHI URL object's constructor takes a string