         childList: yes
         subtree: yes
 
-    # `_bindTriggers` links each trigger to the tip for: 1) possible appearance
-    # changes during mouseenter, mouseleave (uses special events) and 2)
-    # following on mousemove only if `doFollow` is on. Also note for our
-    # `onMouseMove` handler, it's throttled by `requestAnimationFrame` when
-    # available, otherwise manually at hopefully 60fps.
+    # 𝒇 `_bindTriggers` links each trigger to the tip for:
+    # 1. Possible appearance changes during mouseenter, mouseleave (uses special
+    #    events).
+    # 2. Following on mousemove only if `doFollow` is on.
+    # 
+    # Also note for our `onMouseMove` handler, it's throttled by `requestAnimationFrame`
+    # when available, otherwise manually at hopefully 60fps.
     _bindTriggers: ->
       selector = ".#{@classNames.trigger}"
-      # Base bindings.
       @$context.on [
           @evt('truemouseenter')
           @evt('truemouseleave')

      triggerPosition = $trigger.position()
      triggerWidth    = $trigger.outerWidth()
      triggerHeight   = $trigger.outerHeight()
      tipSize         = @sizeForTrigger $trigger
      newDirection    = _.clone @defaultDirection
      @debugLog { triggerPosition, triggerWidth, triggerHeight, tipSize }
      for component in @defaultDirection

            when 'left'   then newDirection[1] = 'right'
          $trigger.data @attr('direction'), newDirection.join ' '

    # 𝒇 `_wrapStealthRender` is a helper mostly for size detection on tips and
    # triggers. Without stealth rendering the elements by temporarily un-hiding
    # and making invisible, we can't do `getComputedStyle` on them.
    _wrapStealthRender: (func) ->
