K ch1 ch2 ordinary name with unused command aliases F usable as a function Compatible fields: If ;G is present, ;K must be absent. W record Use: Window definitions NL record Use: Chart external link E record Use: End of file. Must be last record. Date and time are stored as a floating point value. The whole number part is a number of days from the Jan 1 1900 (if the O record contains the ;V0 directive, specifying 1900 as the starting point for calculations), the fraction is the number of seconds divided by 86400 (60*60*24, number of seconds in a day). Conversion to unix time can be done by subtracting the difference between Jan 1 1970 and Jan 1 1900 (25,569 days) and then multiplying by 86400; converting from unix time to SYLK datetime is done by dividing the value by 86400 and then adding 25569. The cell style has to be set to some date formatting value, e.g. to be displayed properly. .slk file exports opened with Excel have a limit of 255 characters in a cell. This limit is not present in LibreOffice. External links Detailed examples can also be found at here Syntax for SYLK can be found at: Microsoft SYLK summary (see also the Abusing the SYLK file format article for some useful information) GFF Format Summary: Microsoft SYLK and at: comp.apps.spreadsheets FAQ Excel Tips Converting Unix Date Time Stamps Limits related to reading and saving with Excel: Microsoft.com Excel features References Spreadsheet file formats Microsoft Office