 
   # ### Get Failed Tasks Asynchronously
   #
-  # Failed tasks are stored in the `FAILED` list.
-  #
-  # **Usage:**
+  # Failed tasks are stored in the `FAILED` list. **Usage:**
   #
   #     queue.failed_tasks (tasks) ->
   #       console.log "#{tasks.length} tasks failed: ", tasks

  # ### Get Currently Processing Tasks Asynchronously
  #
  # Currently processing tasks are tasks in the `RECENT` list, which will be
  # limited to a maximum size defaults to 10.
  #
  # **Usage:**
  #
  #     queue.processing_tasks (tasks) ->
  #       console.log "#{tasks.length} tasks being processing: ", tasks

  #   to ensure sequential processing for all tasks of the same group (aka.
  #   first-come-first-serve). Current time is appended at the argument array
  #   for statistics. A callback is optional.
  #
  # **Usage:**
  #
  #     queue.enqueue 'param1', 'param2', -> console.log 'queued!'
  #     queue.enqueue 'param1', 'param2'
