@@ -514,6 +514,36 @@ delimiter
514: delimiter of list numbers; one of `DeaultDelim`, `Period`,
514: delimiter of list numbers; one of `DeaultDelim`, `Period`,
515 `OneParen`, and `TwoParens` (string)
515 `OneParen`, and `TwoParens` (string)
517+## Hierarchical Element {#Element}
519+Hierarchical elements can be either *Sec* (sections) or *Blk*
520+(blocks). *Blk* elements are treated like [block]s.
524+Section elements used to provide hierarchical information on
527+**Objects of this type are read-only.***
530+: header level (integer)
533+: section numbering ([list] of integers)
536+: header attributes ([attributes])
539+: header content ([list] of [inlines])
542+: list of contents in this section ([list] of hierarchical elements)
545+: constant `Sec` (string)
518[block]: #block
548[block]: #block
519[blocks]: #block
549[blocks]: #block