Besides LANG, there are other NLS environment variables such as LC_CTYPE and LC_ALL. These variables are not affected by the dtlogin language resource
nor by the login screen Options menu. They must be set in the following files:
System-wide variables: /etc/dt/config/Xsession.d
Personal variables: HomeDirectory/.dtprofile
The NLSPATH environment variable determines the directory paths that applications search for message catalogs. Both LANG and NLSPATH must be set to use those message
catalogs. Refer to "Localizing Message Catalogs" for the location of localized messages. Most desktop clients will prefix the path to NLSPATH upon startup.