n:none; }
.nanotabs > ul li a:hover { background:#FFFCE5; color:#550; }
.nanotabs > ul li a.selected { background:#555; color:#FFF; }
  </style>
</head>
<body>

  <section id="abstract">
    <p>
      This specification details a model for representing potential and
      completed activities using the JSON format. It is intended to be used
      with vocabularies that detail the structure of activities, and define
      specific types of activities.
    </p>

    <section id="authorsnote" class="informativ