Why are anchor links not available to pages?

I noticed in the documentation that insert_anchor_links are only available for sections. Is that, and , if so, why?

It applies to all pages in that section.

Ahh that makes so much more sense than what I thought. Ok, thank you.

That does not seem to be the case for me?

content/projects/_index.md # has `insert_anchor_links = "right"`
content/projects/website/index.md # gets anchor links
content/projects/website/markdown.md # does not get anchor links 

Why does the markdown.md page not get anchor links?

I’m also confused why I can’t seem to set it globally and/or individually on each page, but only for sections.

Am I doing something wrong?