Thank you James.
So I finally found the WidgetPanel code here:
litegraph.js zip is at github.

litegraph.js-master>src>nodes>interface>WizardPanel().

It states "Non interactive panel".
So my guess is that it is just a pretty box, which does not have any text ability. (???)
There are a couple of other programs using litegraph, that may use the box, with additions, to display graphics(?)

- Brian