Some configurations may be exactly the same except for a few settings. To minimize
duplicating files or numerous links and shortcuts, a common configuration can be
created. A common configration is a special configuration with a configuration type
of Common. A common configuration is be used by other configurations to share
settings and applications.
A common configuration is created just like a normal configuration. The difference is to set the Configuration Type to common and be sure to leave the Common Configuration field blank.

To use a common configuration, modify the configuration's properties:
Now the configuration will use a common configuration.
The environment variable DSL_COMMONDEPT_DIR will be set to the Common Configuration directory location. This will be helpful in menuscripts and in environment variables. You will still use DSL_DEPT_DIR when you need to refer to the actual configuration directory.
NOTE: When not
using a common configuration, DSL_COMMONDEPT_DIR will be the same as DSL_DEPT_DIR.
GRIPs, ufuncs, menuscripts, and dialogs can still be placed in the configuration directory to create configuration specific applications that are not available to other configurations that use the same common configuration.
Most subdirectories in the configuration's NX version directory can still be used as if no common configuration has been defined. This allows defining additions to what is in the common configuration. However, a few subdirectories will only be searched in the common configuration. They are: