{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "description": "The heading block (content). Reads: none. Shape: none.",
  "properties": {
    "heading": {
      "additionalProperties": false,
      "properties": {
        "id": {
          "description": "The block's id: its Markdown anchor and its actions' route (`/act/<id>/<action>`). Default `<type>-<n>`, n counting blocks of this type depth-first from 1.",
          "pattern": "^[a-z][a-z0-9-]{1,38}$",
          "type": "string"
        },
        "level": {
          "default": 2,
          "description": "2 for a section, 3 for a sub-section.",
          "maximum": 3,
          "minimum": 2,
          "type": "integer"
        },
        "text": {
          "description": "The heading's words.",
          "maxLength": 200,
          "minLength": 1,
          "type": "string"
        }
      },
      "required": [
        "text"
      ],
      "type": "object"
    }
  },
  "required": [
    "heading"
  ],
  "title": "heading",
  "type": "object"
}