Re: @key broken

[Karl Berry]

      {\tt \backslash}$\langle${\rm CR}$\rangle$
    or
      {\tt \backslash<CR>}

I'm baffled.  Why the backslash?  As a casual reader, I would never
think that a backslash somehow means the name of a key.

    Any other ideas?

So far my favorite option is to leave it as-is: {\tt CR}.