Specifications

Naming a DOS File
If you plan to use any of your documents on a computer that uses DOS,
create a name that DOS will recognize. DOS names can be up to eight
characters long, followed by an optional period and three more characters.
The three characters or extension usually indicates the type of data the file
contains. For example, give a .T_T extension to a DOS text file, such as one
created with Text File Editor.
DOS: Disk Operating
System
DOS file names can only contain the letters A through Z, the numbers 0
through 9, and only the following special characters:
No ob_er special
characters are
permitted.
Special Characters Allowed in DOS File Names
underscore caret "
dollar sign $ tilde
exclamation
! number sign #
point
percentage sign % ampersand &
hyphen - braces { }
parenflaeses ( ) at sign @
apostrophe ' grave accent "
DOE names cann& contain spaces, commas, backslashes, asterisks, question
. marks, or periods (except the period following the first eight characters). The
letters are always converted to uppercase.
Getting Started 52