Each style's formatting is now worked out once, on top of the style it
is based on, and each property run's formatting once, so a document with
many hidden paragraphs or long style chains no longer resolves the
chains again for every paragraph and run. Character styles are applied
as a change to the paragraph's formatting.
A bin table whose file positions do not rise, a property page listed
twice, pages whose runs overlap, and styles based on each other in a
loop are refused as damaged, as MS-DOC requires (PlcBteChpx, ChpxFkp,
StdfBase). Property runs refer to their page instead of copying it.