Floating Text Box in Vanilla Neatline?

Is it possible to have a box of text unnassociated with a geographic point but tied to a view and zoom level in Neatline? I want to have a welcome box of text when users first go to this neatline exhibit, but I can’t find a way to do it without tying it to a point of geography. I thought setting the min and max zoom levels the same as well as using the “set current viewport as default button” and setting it to the same as the exhibit opening viewport would do it, but I can’t get the record to show up at all. Any ideas or am I out of luck on this one?