       for concept in concepts { addConceptView(concept) }
     }
     
-    for point in clicks { drawCenteredDotAtPoint(point, color: NSColor.cyanColor()) }
+    // for point in clicks { drawCenteredDotAtPoint(point, color: NSColor.cyanColor()) }
   }
   
   // MARK: - Drawing Functions

  func addLinkView(link: Link) {
    if !link.added {
      sprint("add link view")
      let linkView = LinkView(frame: link.rect, link: link)
      addSubview(linkView)
      link.added = true
    }

  func addConceptView(concept: Concept) {
    if !concept.added {
      sprint("add concept \(concept.identifier)")
      let conceptRect = conceptRectWithOffset(concept)
      let conceptView = ConceptView(
        frame: conceptRect,
        concept: concept,
        canvas: self
      )
