code: function TilingPattern(IR, color, ctx, objs, commonObjs, baseTransform) {
      this.operatorList = IR[2];
      this.matrix = IR[3] || [1, 0, 0, 1, 0, 0];
      this.bbox = IR[4];
      this.xstep = IR[5];
      this.ystep = IR[6];
      this.paintType = IR[7];
      this.tilingType = IR[8];
      this.color = color;
      this.objs = objs;
      this.commonObjs = commonObjs;
      this.baseTransform = baseTransform;
      this.type = 'Pattern';
      this.ctx = ctx;
    }
docs: 10in @ 300dpi shall be enough