Preview dialog
Turn on / off
You can turn on / off the preview dialog in the setting panel.
You can also turn on or off the dialog by pressing p
key in the main canvas.
Preview canvas
The preview canvas has independent viewport from the main canvas, so that you can preview your shapes with specific viewport setting while working in the main canvas.
You can pan or zoom the preview canvas in the same way as the main canvas. Whilst you cannot select or edit shapes in the preview canvas.