In code extension characters,having the characteristic that a change in inte rpretation applies to all coded representations following,or to all coded representations of a given class,until the next appropriate code extension character occurs.

• 代码扩充字符具有这种锁定特性时，对该扩充字符后随的所有编码表示或者对给定种类的所有编码表示在解释时都要转义，直到出现下一个适当的代码扩充字符为止。