- docx: zero paragraph indent for centered headings/captions/figure notes
so they no longer shift right (empty <w:ind/> inherited 709 twips)
- docx: use pageBreakBefore instead of a separate break paragraph; drop
the merger page break to remove the blank page after the title page
- docx: heading numbers separated by space instead of tab
- docx: bullet marker is the Symbol dash U+F02D
- pptx: narrower slide number moved left and bold; content title lower;
section title on the right half like title/final
