So yesterday I was trying to remember how to change the main landing page for my instructors guide. It had started defaulting to an unhelpful place. Searched for Landing page — Section 24.2 - TODO. Looked at the reference pages for the publisher file (I knew it had to go there) Nada.
Asked Claude
By default the top-level page of your book is what a visitor lands on. If you want a specific division (a chapter, section, etc.) to be the default page instead, you set this in your publication file. Inside the <publication> element, add an <html>element with an <index-page> child whose @ref points to the @xml:id of the division you want:
xml
<publication>
<html>
<index-page ref="birds"/>
</html>
</publication>
Perfect!! The point of this post is not to complain, but rather to encourage authors who may like to see examples of how to do things that Claude is a great resource. I asked it how to write several different question types and it was spot on for every one, providing good detail about the various options.
Brad