这些语言特性可以提供一种紧凑而简明的方式来为状态间的事件和转移组织动作，还可以提供一种巧妙的方式来兼容不同的浏览器事件模型。

These language features provide a compact and concise way to organize actions for events and transitions between states, and an elegant way to cope with differences between browser event models.

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对于与复合状态兼容的每一种元数据类型，子状态机中的每一个转换都有一个限制策略。

For each metadata type compatible with a composite state, every transition in the sub-state machine has a policy for restriction.

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当时，大多数用户就停留在Windows 98和Windows 98 SE上，微软就把自己的路线改变到XP上——XP是可以提供原状态更新以达到兼容的目的的。

So most users stuck with Windows 98 or 98 SE, and Microsoft eased the path to XP by allowing in-place upgrades for them all.

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