For up to date documentation and features, visit http://docs.sencha.com/ext-js/4-0

## Sencha Documentation

# Layouts and Containers

The layout system is one of the most powerful parts of Ext JS. It handles the sizing and positioning of every component in your application and keeps everything in the right place while your user gets their work done.

In Ext JS 4 we have the best performance and flexibility compared to previous versions, as well as brand new layouts like DockLayout.

## This guide is a work in progress.

Please check back soon