HP15C CE Finance Pac

[Johnh]

I have a couple of general questions about the overlays, (which look very good indeed in the photos!)

In relabelling a key, is it the general idea that it then leads to a subroutine addressed by a LBL?
Are there any issues with the original hardware function of the key, which presumably is still active?
How physically, are new labels on the actual keys attached? is it a seperate small piece stuck to the key? or is it a bulge in the surface of the continuous overlay? How durable are they?

Sorry if these questions are covered elsewhere.