Language Environment run-time options can be configured to optimize your system performance and compatibility. The wizard will ask you some basic questions and set system-wide options that have been optimized based on your answers. If you want to further customize your options after completing the wizard, you can select to modify your default options for CICS or non-CICS (IMS) environments from the appropriate property sheet. You can also customize individual regions with the region-specific property sheets.
You can find more detailed help on the following elements of this window:
Further Customize Run-Time Options