I should prefix this by mentioning that this is my first foray into Objective-C. Rob Rix got me started by pointing me to the NSResponder class and telling me about the class-dump script. But now that I am trying to call the window methods directly I do not know what to pass it as the sender argument. NSResponder - (void)moveDown:(id)sender I am getting this in the error log. 2007-01-07 11:24:12.133 TextMate[2053] *** -[OakWindow moveDown:]: selector not recognized [self = 0x1645140] 2007-01-07 11:24: 12.134 TextMate[2053] sendEvent: Caught NSInvalidArgumentException: *** -[OakWindow moveDown:]: selector not recognized [self = 0x1645140] kirt