In messing around with GIMP, my spastic fingers inadvertently clicked in the wrong place, in the wrong order, or just plain wrongly. I don't really know how it happened. My tool box, which previously had the tool options displayed in the lower half, now has a blank area that says "you can drop dockable dialogs here"

I can open a tool options dialog from the <windows> <dockable dialogs> menu, but that is a free floating dialog that disappears under the toolbox when I click on the toolbox. I'm missing something, I imagine it's something simple, as dragging that dialog over the toolbox does not attach it to the toolbox.

The online tuts are kinda vague on this sort of thing so far as I've found.

Hope someone can help. Thanks.