x = {"menu": {
  "id": 2e10,
  "value": "File",
  "x" : 1.5,
  "y" : 2.5e-5,
  "popup": {
    "menuitem": ["",
      {"value": "New", "onclick": "CreateNewDoc()"},
      {"value": "Open", "onclick": "OpenDoc()"},
      {"value": "Close", "onclick": "CloseDoc()"}
    ]
  }
}}
