The -LANG command line switch can be used with either the Bar Code Generator client or the Front Office Scanning client.
The -LANG command line switch is used to force the client to use any language DLL it finds, not just the language DLL that matches the workstation's regional settings.
When the -LANG switch is used, the client will use the first language DLL it finds. If no language DLL is found, the client will revert to English.