A heading block starts a section. It has text and annotations. There is no level attribute: a heading's depth is its nesting depth. The blocks under it are its section, laid out by childrenType and columnCount (see children type). In the markdown dialect a heading's children sit at its indentation until the next heading of the same level.

See also

Blocks: nesting and sections.

block/node: a block and its children.

block/paragraph: the default text block.

block/annotation: inline formatting.