Normally you hash entries and set those bits hot
ВсеПрибалтикаУкраинаБелоруссияМолдавияЗакавказьеСредняя Азия，更多细节参见新收录的资料
，更多细节参见新收录的资料
}optional means the program can function without these capabilities but will use them if available. You check at runtime whether an optional capability is present:
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