清单2显示了一个看起来没什么害处的同时构造和登记侦听器的企图。
Listing 2 shows a harmless looking attempt to construct and register a listener at the same time.
现在要做的全部工作就是创建一个TLD(标记库描述符)文件，以登记定制标记，如清单4所示。
Now all you have to do is create a TLD (tag Library Descriptor) file to register your custom tag, as shown in Listing 4.
如果这些行是获奖者的名单，一个有限资源的登记表，一个待办事项清单，或者其他注重顺序的序列，这就可能会是一个问题。
This might be a problem if the lines are a list of prize winners, a sign-up sheet for a finite resource, a to-do list, or any other sequence in which first-in should remain best-dressed.
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