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https://ja.hideki.hclippr.com/2008/09/07/openoffice-org-3-0-%e3%82%bf%e3%82%b0%e4%bb%98%e3%81%8dpdf%e5%95%8f%e9%a1%8c%e3%81%ab%e9%96%a2%e3%81%97%e3%81%a6/
OpenOffice.org 3.0 タグ付きPDF問題に関して