Project: QGIS
Version: 2.16.0
The style dock is a new, far more efficient, way to manage layer styles in QGIS. It supports a live preview of style changes as they are made, full undo / redo support and a less distracted workflow as you prepare your map cartography. For a comprehensive overview of the style dock's features, please see style dock part 1 and style dock part 2.
This feature was developed by Nathan Woodrow