Changing XKB options without being root

[Clarence Dang]

Let's suppose root has enabled an XKB option...:

/etc/X11/xorg.conf:

~~~~
Section "InputDevice"
[...]
        Option      "XkbOptions" "numpad:microsoft"
EndSection
~~~~

... and I'm a mere (non-root) user who wants to turn that option off.
Or turn another option on.

What's the command to do that?  I would prefer to use a non-GUI app
e.g. not kxkb.

Thanks,
Clarence

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