[1] text-underline-style:single; [Excel 10]
Word 10 では同じと思われる意味の特性は text-underline ではなかったか? 総称特性なのか?
[3] OASIS Open Document Format for Office Applications (OpenDocument) Version 1.2 - Part 1: OpenDocument Schema ( 版) <http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#a19_485style_leader-style>
The definitions of the values of the style:leader-style attribute are based on the text decoration style 'text-underline-style' from [CSS3Text], §9.2.