OKHDF: {
  x<paper width>: float,
  y<paper length>: float,
  type<printer type>: inkjet|laser,
  color<printer's color ability>: bool,
}
PARSED: {
  "x": {
    "description": "paper width",
    "type": "float"
  },
  "y": {
    "description": "paper length",
    "type": "float"
  },
  "type": {
    "description": "printer type",
    "types": [
      "inkjet",
      "laser"
    ]
  },
  "color": {
    "description": "printer's color ability",
    "type": "bool"
  }
}