{
  "comments": {
    "new": "Volume Label: VOLUME_ID",
    "old": "MCN unverified"
  },
  "legacy": {
    "cdtext_catalog": {
      "new": "0000000000000"
    },
    "write_offset": {
      "new": "0"
    }
  },
  "ring_codes": {
    "new": "ECOQUEST\tDISC MFG., INC. (A1)\tW.O.# 42157-1",
    "old": "ECOQUEST W.O.# 42157-1 DISC MFG., INC. (A1)"
  }
}