The following are the keyboard shortcuts for an IPython Notebook. Learning to use these will help speed up your interactive shell development.Command Mode (press Esc to enable)Enter : enter edit modeShift-Enter : run cell, select belowCtrl-Enter : run cellAlt-Enter : run cell, insert belowY : to codeM : to markdownR : to raw1 : to heading 12 : to heading 23 : to heading 34 : to heading 45 : to hea