Propers & Slots

The ordinary is fixed service structure. The propers vary by day, feast, season, commemoration, or local usage.

{
  "id": "proper-timkat",
  "priority": 100,
  "priorityClass": "major-feast",
  "conditions": {
    "calendarDate": {
      "system": "ethiopian",
      "month": 5,
      "day": 11
    }
  },
  "fills": {
    "gospel-of-the-day": { "$ref": "reading-timkat-gospel" }
  }
}

Slot Filling

The Ordo declares available slot IDs; a proper supplies content for those IDs. A processor should report a proper that fills an unknown slot instead of silently appending its content.

{
  "id": "proper-timkat",
  "fills": {
    "psalm-of-the-day": { "$ref": "block-timkat-psalm" },
    "gospel-of-the-day": { "$ref": "reading-timkat-gospel" }
  }
}

A slot fill changes variable content without changing the surrounding service structure. When content must be inserted, omitted, moved, or replaced outside a slot, use a structural proper mutation.

Priority is only one part of resolution. priorityClass, explicit conflict rules, and canonical fallback rules must agree on which active proper wins when two propers claim the same slot.

Slot Filling

The Ordo declares available slot IDs; a proper supplies content for those IDs. A processor should report a proper that fills an unknown slot instead of silently appending its content.

{
  "id": "proper-timkat",
  "fills": {
    "psalm-of-the-day": { "$ref": "block-timkat-psalm" },
    "gospel-of-the-day": { "$ref": "reading-timkat-gospel" }
  }
}

A slot fill changes variable content without changing the surrounding service structure. When content must be inserted, omitted, moved, or replaced outside a slot, use a structural proper mutation.

Priority is only one part of resolution. priorityClass, explicit conflict rules, and canonical fallback rules must agree on which active proper wins when two propers claim the same slot.