One of my colleagues found that if you add the following to a web port URL:
&container=true
The web port app opens up with the right hand pane maximised, so that you only see the right hand pane.
This is very useful for some apps.

Are there are any other features like this? For example, if I wanted to start the web app with only the left hand pane showing.
Are they documented somewhere?

Thanks,
Ian