nl_tokens: LayoutView s render will use the existing region objects the first time it is called . Subsequent calls will destroy the views that the regions are showing and then reset the el for the regions to the newly rendered DOM elements .
pl_tokens: function ( ) { this . _ensureViewIsIntact ( ) ; if ( this . _firstRender ) { // if this is the first render, don't do anything to // reset the regions this . _firstRender = <mask> ; } else { // If this is not the first render call, then we need to // re-initialize the `el` for each region this . _reInitializeRegions ( ) ; } return Marionette . ItemView . prototype . render . apply ( this , arguments ) ; }