act more like keywords than like ordinary identi�ers; unlike a keyword however, a rede�nition may shadow the de�nition in the system (system.html) module. From this list the following should not be written

Nonoverloadable 内置命令 出于实现简单性的原因，以下内置过程不能被重载（它们需要专⻔的语义检查）： 因此，它们的⾏为更像关键字⽽不是普通的标识符；然⽽，与关键字不同的是，重定义可能会 shadow system (system.html)模块 中的定义。 从列表中，以下过程不应以点表示法 x.f 来编写，因为 x 在传递给 f 之前⽆法进⾏类型检查： Var 参数 参数的类型可以使⽤

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that

inside a new scope may shadow symbols that were visible outside the actual block, e.g. by defining a variable named e of arbitrary type in the proc p1 from above would shadow the global variable e, that