typikon/data/tradition-slavic.json

{
 "_meta": {
  "mode": "add",
  "title": "Slavic usage",
  "note": "Where Slavic books differ from Greek ones. Ranks stated here override the common menologion; local commemorations would be added the same way."
 },
 "10-01": {
  "rank": "great"
 }
}