     <div class="shell-options-view row-fluid"></div>
     <div class="remix-views"></div>
     '''
+
+  defaultShell: EmptyShell,
 
   initialize: =>
     super


    # if there are no shells, add an empty one
    if shellCount is 0
      @addShell new EmptyShell.Model

  # retrieves the finalized shell. @model should not be used directly.
  shell: =>

# figure out whether shell must change based on final state

Shell = acorn.shells.Shell
EmptyShell = acorn.shells.EmptyShell
CollectionShell = acorn.shells.CollectionShell

# View to edit a shell. Renders shells' RemixViews.
