Hi all, I have made a document which collects some corner cases. Tests with LibreOffice, Calligra, Gnumeric and Excel show, that only for the question "Are the range values included" for "between", there is a consensus of "Yes". For the other problems I see differences. Conclusion: The exact calculation needs to be specified for ODF 1.3 Kind regards Regina Attachment: Several_Between_tests.ods Description: application/vnd.oasis.opendocument.spreadsheet