They were talking about that on the forum once - it (the 'h') is used in german and I think french music notation for one of the "standard" chords - but I misremeber which - as I don't know a chord from a bunch of stovewood I don't even try to remmeber that kinda stuff. It causes my brain cell to break out in a nervous sweat and then lint sticks to it.

Care to share the url of the site you found it on? Always good to give credit...