The `docx` package swaps the pair itself for a landscape section, so it
wants the portrait box; handed the swapped one it wrote a portrait page
merely labelled landscape — LibreOffice renders it portrait (measured:
21×29.7cm out of a landscape document).
Per-section paper rides the same fix: an HfSet carries its own format and
orientation, ODF cloning the section's page layout as it already did for
the margins and DOCX writing it into each w:sectPr.
Steffen Becker
12fe4e7239