I have read all I can find on creating a sitemap, but it seems to assume something I do not know!
I am using the Wowchemy Academic theme and have created a multi-lingual site. I just want to add a sitemap.
I have created a menu-item in menus.toml:
This XML file does not appear to have any style information associated with it. The document tree is shown below.
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<sitemap>
<loc>http://localhost:1313/en/sitemap.xml</loc>
</sitemap>
<sitemap>
<loc>http://localhost:1313/fr/sitemap.xml</loc>
</sitemap>
</sitemapindex>
A webpage for a person to see navigation for the entire website, or
The Sitemaps protocol (Sitemaps - Wikipedia), which is XML-based and used by search engines (and other non-human applications)
Hugo comes with a sitemap.xml template that basically works out of the box, you can read about it at Sitemap Template | Hugo. That template covers the second scenario, the protocol.
If you’d like to create a human-readable version (the first scenario above), then you’d create a page with a template that listed all or a sub-section of the pages on your site.