This afternoon we went hunting for #manuscript#fragments inside the bindings of printed books, with the help of an endoscope. We made some very interesting finds, from ninth-century strips to Gothic music.
The most obscure of these related English words is the "paste-up" -- there might be a better term -- which is the sheet glued directly to the inside of the cover board, usually with the leather of the cover tucked under it. And they also are sometimes made with fascinating #fragments.