Filenames
In theory, a filename can consist of any characters available on the keyboard. In practice however, many characters are of special significance to the MS-DOS or Windows NT operating systems and these should not be used in filenames and directory names.
Table 4 gives the characters with special significance to the operating system.
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asterisk
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*
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question mark
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?
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less than
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<
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greater than
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>
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bar
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forward slash
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/
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backslash
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\
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quote
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'
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colon
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:
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As a general rule, it is best to restrict yourself to names consisting of letters, digits, and underscore characters.
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You can use upper or lower-case letters for filenames, however, do not mix cases when entering commands. For example, File01 is valid for a filename, but Create_Directory is not valid for a command.
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