QWS3270 Secure uses one of three different locations to store it's parameter settings:
The Windows registry - under HKEY_CURRENT_USER\Software\JollyGiant\QWS3270 Secure
Session Files - in the "Documents and Settings\<USER_NAME>\Application Data\Jolly Giant Software\QWS3270 Secure folder"
An .ini file - in the program directory called qws3270s.ini
By default, the program uses settings files to store the its parameters. You can override this behaviour by choosing one of the options in the Application Settings dialog. The option that is selected when you display the dialog is the one that the program is currently using.
Using the registry allows the parameters to be specified on a per-user basis. Each user can have his or her own sessions and application preferences.
In a network environment this may not be desirable. An organization may want to be able to easily distribute pre-defined sessions to all or some of their users. This can be achieved by placing the .ini file in a location that is accessible to all users, and to specify that this location is to be used by all users for their settings by creating shortcuts to the program with the -d command line option.
Settings files offer a compromise between the first two options by allowing users to have their own sessions but still allow administrators to distribute pre-configured settings files over the network to their users.