What is the bottom space on the Windows Forms design view?

Question

I'm trying to learn about Windows Forms Application. Now, as I was creating a DataSet, Binding source, Table adapters. I noticed they show up on a bottom section on the design view. My question is: What is that section, and what goes in there?

Answer 1

This section generally corresponds to nonvisual elements in a Form, but which are stil relevant to the Form, such as a Timer.

Since they're nonvisual, it doesn't make sense to put them in the designer with the visual elements, but they still need to be in the designer for the designer to be useful in setting their values.