For another example, I’d like to have a background map that two (or more) pages share. This seems like a common situation but I don’t see anything on how to nest or inherit pages in the documentation.
Can you elaborate? Making the a shared component is not the problem. Including it in both the pages is the problem. I don’t want to re-render it when the page changes - I want each page to share a common template so that only the content unique to the page loads on page change.