Collapse level in menu not working (as expected)

[tamasgal]

I am having difficulties with the main menu, not being able to expand them all by default. I thought setting the collapselevel parameter of Documenter.HTML to a higher value would do it but it seems to have no effect. (here is a live example https://common.pages.km3net.de/KM3io.jl/dev/)

Only the currently selected menu is expanded, everything else is collapsed. Here is a screenshot where "Examples" have been clicked:

This is my make.jl:

makedocs(;
    modules = [KM3io],
    sitename = "KM3io.jl",
    authors = "Tamas Gal",
    format = Documenter.HTML(;
        assets = ["assets/extra_styles.js"],
        collapselevel = 4,
        warn_outdated = true,
    ),
    pages = [
        "Home" => "index.md",
        "Examples" => "examples.md",
        "API" => "api.md"
    ],
    repo = "https://git.km3net.de/common/KM3io.jl/blob/{commit}{path}#L{line}",
)

and index.md, examples.md and api.md contain #, ## and ### headings.

Any idea what's wrong? I compared my configuration with a few other ones but I can't spot my mistake.

[mortenpi]

Yes, that's intended. There is a distinction between page hierarchy and in-page headings. collapselevel is only about the former.

You want all in-page headings to always be expanded?

[tamasgal]

Ah OK thanks. Yes, I'd like to expand them all. I guess I have to rearrange the pages structure then?

[mortenpi]

Yeah, if you want stuff always to be listed in the sidebar, you'd have to turn the in-page headings into separate pages.