nl_tokens: Group by the header the user has clicked on .
pl_tokens: function ( menuItem , e ) { var me = this , menu = menuItem . parentMenu , hdr = menu . activeHeader , view = me . view , store = view . store ; delete me . lastGroupIndex ; me . block ( ) ; <mask> . enable ( ) ; store . group ( hdr . dataIndex ) ; me . pruneGroupedHeader ( ) ; me . unblock ( ) ; me . refreshIf ( ) ; }