How to create PGP-signed textfiles using Kleopatra GUI for Gpg4win that include the message en clair before the signature?

I am using Gpg4win with the Kleopatra GUI on Windows 10 Pro. When I use my private key to sign a textfile the program produces a signed textfile that authenticates properly using my public key. But for some reason all that the signed textfile contains is the signature, sandwiched between

-----BEGIN PGP SIGNATURE-----

and

-----END PGP SIGNATURE-----

but not preceded with the message en clair.

How can I use this program and GUI to create a signed textfile that is in what I thought was the standard format for such files, and that would look for example like this:

-----BEGIN PGP SIGNED MESSAGE-----
Hello world!
-----BEGIN PGP SIGNATURE-----
Version: [...]
[...]
-----END PGP SIGNATURE-----

I have looked under Settings | Configure Kleopatra but cannot find a toggle for this. In any case, surely the standard meaning of "sign" is "postpend a signature", so I am not sure what is going wrong here.

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