     # Arrows
     addSVGMarker svg_group, [klass] for klass in sentence_klasses
 
-    path = svg_group.append("svg:g").selectAll("path").
-      data(force.links()).
-      enter().
-      append("svg:path")
+    path = svg_group.append("svg:g").selectAll("path")
+      .data(force.links())
+      .enter()
+      .append("svg:path")
     path.attr "class", (d) ->
         proven = "link proven" if !! d.info.proven
         unproven = "link unproven"

addSVGMarker = (svg_element, payload) ->
  svg_element.append("svg:defs").selectAll("marker")
    .data(payload)
        .enter().append("svg:marker")
          .attr("id", String)
          .attr("viewBox", "0 -5 10 10")
          .attr("refX", 14.5)
          .attr("refY", -0.0)
          .attr("markerWidth", 6)
          .attr("markerHeight", 6)
          .attr("orient", "auto")
        .append("svg:path")
          .attr("d", "M0,-6L10,0L0,6")

jQuery ->
  $("div#d3_graph").html(HandlebarsTemplates['graphs/loading']({}))

      scaleExtent([0.1, 3]).on("zoom", zoom)

    $("div#d3_graph").html("")
    svg = d3.select("div#d3_graph")
      .append('svg')
      .attr('width', width)
      .attr('height', height)
      .call(zoom_listener)
    svg_group = svg.append('g')
      .attr('class', 'graph')

    force = d3.layout.force()
    force.nodes(nodes)
