nl_tokens: Creates a new DygraphLayout object .
pl_tokens: function ( dygraph ) { this . dygraph_ = dygraph ; /**
     * Array of points for each series.
     *
     * [series index][row index in series] = |Point| structure,
     * where series index refers to visible series only, and the
     * point index is for the reduced set of points for the current
     * zoom region (including one point just outside the window).
     * All points in the same row index share the same X value.
     *
     * @type {Array.<Array.<Dygraph.PointType>>}
     */ this . <mask> = [ ] ; this . setNames = [ ] ; this . annotations = [ ] ; this . yAxes_ = null ; // TODO(danvk): it's odd that xTicks_ and yTicks_ are inputs, but xticks and // yticks are outputs. Clean this up. this . xTicks_ = null ; this . yTicks_ = null ; }