About Thai worksheets
All Thai worksheets in Excel 2002 or later share the following features:
File compatibility Excel 2002 or later can open worksheets created in Thai Microsoft Excel 2000 or earlier. There may be some Thai specific formulas that are not supported in Excel 2002 or later.
Dates Dates in cells that use default formats may be displayed differently in Excel 2002 or later than in Thai Microsoft Excel 2000 or earlier. The default calendar for Excel 2002 or later is Gregorian, whereas the default calendar is Thai Buddhist for some default date formats in earlier Thai versions of Excel.
Sorting You might experience different sorting order results depending on the user regional setting of the Microsoft Windows operating system you are using.
Thai function formulas There are some Thai function formulas that were available in Thai Microsoft Excel 2000 or earlier that are not supported in Excel 2002 or later . An error message such as #VALUE! will be displayed in cells that contain non-supported Thai function formulas.