The default interface language. See translate.getoutline.com for a list of available language codes and their rough percentage translated.
Declarations
Type
one of "da_DK", "de_DE", "en_US", "es_ES", "fa_IR", "fr_FR", "it_IT", "ja_JP", "ko_KR", "nl_NL", "pl_PL", "pt_BR", "pt_PT", "ru_RU", "sv_SE", "th_TH", "vi_VN", "zh_CN", "zh_TW"Default
"en_US"