code: function (nm) {
          el = d3.select(nm).append("svg")
                      .attr("width", config.width + 2 * config.margin)
                      .attr("height", config.height + 2 * config.margin)
                  .append("g")
                      .attr("transform", "translate(" + config.margin + ", "
                                                      + config.margin + ")");
          return xkcd;
      }
docs: The XKCD object itself.