Rob Weir looks at ODF spreadsheet interoperability in a blog posting
. Since his original test
in March, things have gotten quite a bit worse, largely due to Microsoft Office 2007 SP2 with integrated ODF support. "We might also hear concerns that supporting other vendors' ODF spreadsheet formulas cannot be done because this formula language is undocumented. The irony here is that the formula language used by OpenOffice (and by other vendors) is based on that used by Excel, which itself was not fully documented when OpenOffice implemented it. So an argument, by Microsoft, not to support that language because it is not documented is rather hypocritical.
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