Add header to only chapter pages and not every page of the book

[nikclucas]

Looking at https://manual.calibre-ebook.com/con...rs-and-footers it seems to imply that headers or footers will be applied to every single page. But there are definitely pages -- e.g. such as the first chapter page where it's very redundant. Is it possilbe to selectively apply headers or footer templates to only particular section types? Perhaps using the javascript angle (I haven't been able to find a lot of info about how much control the javascript portion gives you).

[kovidgoyal]

It's full javascript so you can do pretty much anything, the only limitation is whatever html your output will be rendered only in the header footer areas and you have access only to the variables defined in the docs with regard to metadata about the document.