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'''This is the most important information you have to keep in mind when you have to work with "Excel" files.''' | '''This is the most important information you have to keep in mind when you have to work with "Excel" files.''' | ||
* .xls - is the outdated default binary file format from <= Office 2003 - '''avoid this format!''' | * .xls - is the outdated default binary file format from <= Office 2003 - '''avoid this format!''' | ||
* .xlsx - is the new default file format since Office 2007. It consists of xml files which are stored in a .zip container. - '''always save or convert in this format!''' | * .xlsx - is the new default file format since Office 2007. [https://en.wikipedia.org/wiki/OOXML It consists of xml files which are stored in a .zip container.] - '''always save or convert in this format!''' | ||
** The ''(new)'' OCT interface can read ''(since version 1.2.5)'' and write ''(since version 2.2.0)'' .xlsx files dependency-free! No need of MS Windows+Office nor Java. | ** The ''(new)'' OCT interface can read ''(since version 1.2.5)'' and write ''(since version 2.2.0)'' .xlsx files dependency-free! No need of MS Windows+Office nor Java. | ||
* blame your operating system for hiding the file extension! | * blame your operating system for hiding the file extension! | ||