OptionalattributesManually defined attributes. #<id> definitions will be
converted to an id attribute and all .<class> declarations will
be turned into one class attribute whose value is a string of
space-delimited declaration identifiers (so, {.a .b} will turn
into "class": "a b").
OptionalautoAttributes added by the djot.js parser. This includes automatic ids
on Section elements and a few others.
OptionaldataInfo from the ecosystem.
OptionalpositionPosition of a node in a source document.
Nodes that are generated (not in the original source document) must not have a position.
Node type.
An equivalent of the HTML
<hr>element, typically rendered as a horizontal line.