
Two global filename characters are recognized and acted upon by DOS.  They
are not valid characters in a filename but may be used to specify groups of
similarly named files.  Global characters are particularly useful for commands
such as DIR and COPY where groups of files are manipulated.

?  - A question mark "?" in a filename or filename extension indicates any
     name character may occupy that position.  If the name does not have a
     character at that position, a match is still made.

*  - An asterisk "*" in a filename or filename extension indicates that any
     character or group of name characters may occupy that position.  If the
     name does not have any characters at that position, a match is still made.
