Client-Side Development

How to develop client side application in Vaadin.
I gone through this link https://vaadin.com/book/-/page/clientside.html.
But not getting clear idea about client side development.
Please any one suggest good and simple idea.

Thanks,
Prasath M

My personal idea of a client side Vaadin application is, that it basically is a GWT application, but takes advantage of all the niceties Vaadin offers.Unfortunately there is not much of these available for a client side application, yet. But looking at the roadmap shows, that on some very interesting features will be worked on soonish

https://vaadin.com/roadmap (under R&D for the next 6 months)

Thanks Michael Vogt for your advice.