Another question about themeing

I have posted previously so I apologize for the double post...I just
need some help

I am having trouble figuring out the ControlBitmap and Position Pos
tags.

for the Posisiton Pos field it is my understanding that this is the
position of the button on the background bitmap...hope I am correct
there

For the ControlBitmap, I really dont understand where the numbers come
in. the w=x2-x1+1 has me a bit confused because I don't know which
bitmap is being used for the numbers....the one for the buttons or the
background

<ButtonControl Name="Next">
                <Info Desc="Move to next track" Tip="Next"/>
                <Position Pos="287,29"/>
                <ControlBitmap Rect="0,32,119,63" Name="Buttons"/>
            </ButtonControl>

Thanks for the help

Catherine



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