{
	"title": "Tree / org chart",
	"required": ["root"],
	"additionalProperties": false,
	"properties": {
		"dir": { "enum": ["TB", "LR"] },
		"root": { "$ref": "#/$defs/tnode" }
	},
	"$defs": {
		"tnode": {
			"type": "object",
			"required": ["label"],
			"additionalProperties": false,
			"properties": {
				"id": { "type": "string", "pattern": "^[A-Za-z_][A-Za-z0-9_.-]*$" },
				"label": { "type": "string", "maxLength": 36 },
				"sub": { "type": "string", "maxLength": 40 },
				"tag": { "type": "string", "maxLength": 8 },
				"kind": {
					"enum": [
						"backend",
						"focal",
						"store",
						"external",
						"input",
						"optional",
						"security",
						"muted"
					]
				},
				"focal": { "type": "boolean" },
				"children": { "type": "array", "items": { "$ref": "#/$defs/tnode" } }
			}
		}
	}
}