Module structure 

The logical structure tree (ISO 32000-1 §14.7), read per page and bottom-up.

The shape is unusual and it matters. Nothing here walks /StructTreeRoot /K downward. Instead the page’s /StructParents key indexes the /ParentTree, which yields the elements that own this page’s marked content; each of those walks up its /P chain until it reaches the root, building the ancestors it passes and linking itself into each one’s kid list. Elements on other pages are never visited, which is why the same logical tree looks different from each page.

Two consequences worth expecting:

• The top-level slot list is sized from the root’s /K but filled only by the upward walk, so a document can report more top-level children than it can produce. The dump skips the empty slots.
• Top-level linking matches direct references only, so an inline dictionary written straight into /K is never linked, however well formed it is.

Structs

StructElement

A logical structure element.

StructTree

One page’s view of the document’s structure tree.

Enums

Kid

One entry in a structure element’s kid list.

Functions

dump_tree

Renders one page’s structure tree.