<beginfold id='1'>{</beginfold id='1'>
  "float": 3.1415,
  "int": 123,
  "string": "\a \"b' \n",
  "array": <beginfold id='2'>[</beginfold id='2'> 1, 2, 3 <endfold id='2'>]</endfold id='2'>,
  "object": <beginfold id='1'>{</beginfold id='1'>
    "mult-line": "so this folds"
  <endfold id='1'>}</endfold id='1'>,
  "folded array": <beginfold id='2'>[</beginfold id='2'>
    1, 2, 3
  <endfold id='2'>]</endfold id='2'>
  "error key": "due to missing comma"
<endfold id='1'>}</endfold id='1'>
