Locales that ship with the QKB use 5-letter codes. The first two characters specify the language and the last the geography that the locale is based on (ENUSA for English in the United States, for example). The most probable explanation for a locale named 'L1' is that someone has created a custom locale in this QKB using the QKB Customization Tools provided by SAS. A custom QKB locale won't be documented by SAS - you should ask your SAS Administrator if any documentation is available.
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