Hi guys, as we're planning to improve some plugin API functions [1,2] I'd like to introduce the concept of optional arguments ('options') object, very similar to jQuery 'settings' object [3]. Each API function will declare only mandatory (required) arguments as part of its signature, with any optional arguments embedded within the 'options' object. The 'options' object itself will be optional (can be omitted) and will always be the last argument of each API function. For example: // Without 'options' object, all optional arguments fall back to their default values showDialog('My Dialog', 'my-dialog', 'http://www.example.com/', '800px', '600px') // With empty 'options' object, all optional arguments fall back to their default values showDialog('My Dialog', 'my-dialog', 'http://www.example.com/', '800px', '600px', {}) // With non-empty 'options' object, overriding default 'resizeEnabled' optional argument value showDialog('My Dialog', 'my-dialog', 'http://www.example.com/', '800px', '600px', { resizeEnabled: true }) Support for this concept should be part of [1]. Vojtech [1] http://gerrit.ovirt.org/#/c/11717/ [2] http://gerrit.ovirt.org/#/c/11273/ [3] http://api.jquery.com/jQuery.ajax/