In this question I got two great answers on how to do what I asked for (putting the page number in the footer at the first page of each signature in a book). But --- as some of you probably understand --- it's of course the number of the signature that should go there to make it easier to order the signatures and bind them right.
This procedure is often done when printing books.
The answers to my question would be much more useful to any book designer if they instead answered the intended question: How do I put the signature number at the bottom of the first page of each signature?
Should I leave the question as is, and post a new question? Should I edit the question and notice the answerers? Offer a bounty?
Thankful for thought on best practices!