nl_tokens: Clones viewport with additional properties .
pl_tokens: function PageViewPort_clone ( args ) { args = args || { } ; var scale = 'scale' in args ? args . scale : this . scale ; var rotation = 'rotation' in args ? args . rotation : this . rotation ; return new PageViewport ( this . viewBox . slice ( ) , <mask> , rotation , this . offsetX , this . offsetY , args . dontFlip ) ; }