The Message Editor Interface option in Settings > General Settings > Miscellaneous
Is not displaying the WYSIWYG editor option for me. Can you fix, please?

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Miscellaneous Options
Message Editor Interface:

* Basic Editor - A simple text box
* Standard Editor - Extra formatting controls

When posting messages to the forums or other members, there are three interface types available to you. The simplest of these is a simple text box, while the last is a fully-fledged WYSIWYG editor, which allows you to format your text as you want it and see the results immediately.

Depending upon the capabilities of your web browser, you may not be able to use all of these options. If you experience problems when posting messages, try switching to a different interface type.
</td></tr></tbody></table>BOLD face highlights added by me.
"try switching to a different interface type." You mean different skin? Tried them all. I think WYSIWYG can be enabled by an Administrator.

I imagine it has been deactivated.

Personally, I would welcome it.