{
  "shiftlevels": ["Control"],
  "keys": [
    {"pos": "[",     "letters": ["\u001b"]},
    {"pos": "]",     "letters": ["\u001d"]},
    {"pos": "\\",    "letters": ["\u001c"]},
    {"pos": "Iso",   "letters": ["\u001c"]},
    {"pos": "Space", "letters": [" "]}
  ]
}