"Since the OpenDocument standard for office files covers spreadsheets, the productivity suites based on it, such as OpenOffice.org (OOo) and KOffice, can share spreadsheets between applications--theoretically, that is. In practice, there are still a couple of obstacles for this kind of interoperability among OpenDocument spreadsheet processors, regardless of their origin and license. One is the issue of macros, as I discussed earlier. A bigger one is that, while formatting of spreadsheets is covered by OpenDocument, the actual formulas that make them useful aren't..."
