Novell NETWARE 6-DOCUMENTATION Manual page 713

If you create a Directory Map object to point to an application, users can
access the application by mapping a drive to the Directory Map object.
Directory Map objects can be especially useful in login scripts by indicating
directories that contain applications or other frequently used files. For
instructions on creating Directory Map Objects, see Creating a Directory Map
Object in the ConsoleOne 1.3 User Guide.
If you have a directory that contains a word processor, you will probably map
a search drive to that directory in any login scripts you create. If you should
later upgrade to the word processor and rename the directory, you would have
to change the mapping in every login script where that search mapping
appears.
By using a Directory Map object, you could avoid having to make changes to
the login scripts.
First, using ConsoleOne, you could create a Directory Map object called
CURRENT_WPR that points to the word processor directory
(SYS:PUBLIC\WPR\80).
Then, with a MAP command in your login scripts, map a search drive to the
Directory Map object, rather than to the specific directory:
MAP INS S2:=.CURRENT_WPR.SALES.NOVELL_US
For a general description of the MAP command, see MAP in the Utilities
Reference.
When users log in, their search drive is mapped to the CURRENT_WPR
Directory Map object, which points to the directory containing WPR8.0.
Later, if you upgrade to WPR9.0 and change the directory's name to
SYS:PUBLIC\WPR\90, you would change only the Directory Map object to
indicate the new path.
You would not have to change the MAP command in the login script because
the MAP command still indicates the correct Directory Map object.
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Traditional File Services Administration Guide