The other day I read through some of the caravan handbook ( I must have been ultra bored) It states in there that, in order to unhitch, the button on the hitch must be depressed before raising the handle this refers to to small handle on the coupling and not the stabiliser. I always thought that this button was purely an indicator, to show that the drawbar had dropped and fully engaged on the ball. In all my caravanning years I can never remember pressing this button before raising the handle - all I have ever used it for is to ensure the green is showing when hooking up. I just wondered how many others thought that this button is just an indicatior?