new style editing window

Google defaults to the new Gmail editor window
in october 2012, google tested a new email editor window in gmail. starting today (march 29), this feature will become the default.
How to switch to the old style Gmail editor interface
google has adopted a new style editor interface for all gmail users. new interface with compact design and many hidden tools makes many people feel confused and strange. currently, gmail users can temporarily switch back to the old style editor interface.