# Title used in table of content if any.
var toc_title: nullable String is writable, lazy do return title
+ # Is `self` hidden in the table of content?
+ var is_toc_hidden: Bool is writable, lazy do
+ return toc_title == null or is_hidden
+ end
+
# Add a `child` to `self`.
#
# Shortcut for `children.add`.