code: function _settings(v1, v2) {
      var o;
  
      if (typeof a1 === 'string' && arguments.length === 1)
        return _parameters[a1];
      else {
        o = (typeof a1 === 'object' && arguments.length === 1) ?
          a1 || {} :
          {};
        if (typeof a1 === 'string')
          o[a1] = a2;
  
        for (var k in o)
          if (o[k] !== undefined)
            _parameters[k] = o[k];
          else
            delete _parameters[k];
  
        return this;
      }
    }
docs: This method will set the setting specified by "v1" to the value specified
  by "v2" if both are given, and else return the current value of the
  settings "v1".
  
  @param  {String}   v1 The name of the property.
  @param  {?*}       v2 Eventually, a value to set to the specified
  property.
  @return {Object|*} Returns the specified settings value if "v2" is not
  given, and conrad else.