A DOCX numbering level keeps the first format it saw, so a second nested list
under the same parent with another number format or bullet char silently
rendered as the first one's (an attr-less nested list under an upper-roman
parent came back lower-alpha). The kind-mismatch fork now covers format and
bullet char too, and copies the shallower levels so the importer's cycle walk
still sees the ancestry.
Steffen Becker
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