Packs small adjacent chunks under the same heading up to the size limit. Turn off to keep document-structure boundaries — cleaner separation of captions, figures, and body text.

When a large table is split across chunks, repeat its header row in each piece so rows stay labeled.

Re-sorts multi-column pages into proper column reading order before chunking, so chunks don't split across columns or around floating figures. Single-column pages are left as-is.