Intermec 6640 Technical Reference page 140

Toolkit for the 6640 Computer
" NOTE:
4-80 6640 Mobile Computer Technical Reference
It is recommended that you do not use a computer name or a share
name with a space or a wild character, such as an asterisk (*), a
semicolon (:), or an exclamation point (!). These characters or a
blank space may cause confusion.
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SECTION 4