How to use the if-then-else stack in Stackapp?

Does anyone have an idea How to use this stack. I can’t find any documentation for how to use this stack. Any help will be welcome.

The (pretty elementary) docs are here.

I don’t know this Stack; what happens when you experiment?

Can only assume that there are two dropzones: one for (the display of) each stack depending on a condition set elsewhere in the Stack’s settings. Maybe a third for the Else.

If that doesn’t give up its secret, how about commenting here!

Frustrating, isn’t it…