### The Main Canvas

Main Canvas

This is the main staging area for your controls. You can add controls to this area and then reposition them as desired. Once you add a control to the canvas, that control becomes available for selection from the Properties Pane.

The main canvas also appears in the Properties Pane (shown as mainCanvas) and contains its own properties as well. See "The Properties Pane".

Margins

You can also use the main canvas to adjust your margins. To do this, simply grab the blue triangles above and to the left of the canvas and drag them to a new location.