Microsoft Office Tutorials and References
In Depth Information
Saving files
Rules for file naming
File names in Excel can have up to 218 characters. They can include any combination of
alphanumeric characters, spaces, and special characters, with the exception of the forward
slash (/), backslash (\), greater-than sign (>), less-than sign (<), asterisk (*), question mark
(?), quotation mark ("), pipe symbol (|), colon (:), and semicolon (;). Although you can use
any combination of uppercase and lowercase letters, keep in mind that Excel does not
distinguish case in file names. For example, to Excel the names MYFILE, MyFile, and myile are
identical.
The old familiar MS-DOS-style file name extensions (which are usually four characters these
days, not three) help identify your Excel files, and they are added automatically when you
save a file. Table 2-1 lists Excel extensions in the order in which they appear in the Save As
dialog box’s Save As Type list.
TABLE 2-1 The Excel file extensions
Document type
Extension
Excel Workbook
.xlsx
Excel Macro-Enabled Workbook
.xlsm
Excel Binary Workbook
.xlsb
Excel 97-2003 Workbook
.xls
XML Data
.xml
Excel Template
.xltx
Excel Macro-Enabled Template
.xltm
Excel 97-2003 Template
.xlt
XML Spreadsheet 2003
.xml
Microsoft Excel 5.0/95 Workbook
.xls
Excel Add-In
.xlam
Excel 97-2003 Add-In
.xlm
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