Element lists.
The (section-element-list) is the list elements which are to be
taken to be `sections', for the purposes of navigation, and for
generating tables of contents. For the (make-contents)
function to work, there should be no `missing levels' -- anything
in this list should have its parent also in this list, apart from
elements which have docbody as their parent.
References to the functions in this list should be generated by
function (make-section-reference).
See also (chunk-element-list).
This has to be a function because it's evaluated when there is a current-node so that normalize can know what declaration is in effect.
Type: list
List of GIs