. * Skin extensions sounds like an afterthought. I wonder if we cannot somehow merge the concepts together

comment : I second Joris Dirks' comment about multiple references on a page to one single footnote. A method for doing that in Tex is described here: http://tex.stackexchange.com/questions/35043/reference-different-places-to-the-same-footnote. I hope a similar concept of (optionally) labelling and then