Why do admonitions for `rustdoc` consist only of a warning block?

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1

In AsciiDoc and GitHub's Markdown, admonitions (a.k.a. callouts or alerts) consist of five types (NOTE, TIP, IMPORTANT, CAUTION, and WARNING).

However, rustdoc consist only of a warning block.

Why is this? Is this an intentional limitation?

Looking at usage examples in the clap crate, I think it's also used for purposes like "NOTE" or "TIP".

2

I suppose you could create a suggestion issue on their GitHub, but seeing the number of issues, I wouldn't expect that to be done quickly, unless you volunteer.