Previewing a planner
The creator allows you to view a live preview of the planner that you're working on.

You'll find the Preview button at the bottom of the left-side of the screen.
Options
You are able to change the type of preview that's displayed, from the options window.

Open the Options window, and at the bottom of the This Planner page you'll some options relating to previews.

The Style selector lets you pick between Planner, for the normal web view, and PDF.
PDF output
Should you select PDF then you'll see a PDF with pages for both planner view, and plain times.
You can use the neighbouring selector to switch between Black and white and Full colour.
Persistence
The preview options set on this window will persist until you reload the page.