nl_tokens: Converts PDF rectangle to the viewport coordinates .
pl_tokens: function PageViewport_convertToViewportRectangle ( rect ) { var tl = Util . applyTransform ( [ rect [ 0 ] , rect [ 1 ] ] , this . transform ) ; var <mask> = Util . applyTransform ( [ rect [ 2 ] , rect [ 3 ] ] , this . transform ) ; return [ tl [ 0 ] , tl [ 1 ] , br [ 0 ] , br [ 1 ] ] ; }