:help :check inconsistent with :check

I just struck an inconsistency that had me confused.

I was watching a steadily growing log file, and with autoread set, I used the command

:check

and nothing happened (but for a message I didn't understand). So I went to the help and ran

:help :check

and got the help for the command I thought I was running. Eventually I worked out that :check is actually :checkpath, and I should have used :checktime.

But surely ":h :xyz" should give the help for ":xyz", but am I missing something?

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