Check whether the process needs to go on; the user might have decided to page forward or backward, and it wouldn't do for the former page data to show up.

检查是否需要继续处理；用户可能决定向前或向后翻页，对于前面的页面数据不再处理。

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The navigation bar contains controls to navigate forward and backward as well as the ability to enter a page to load directly.

导航条包含了可以向前向后或者直接定位页面的控件。

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Zend_Paginator also takes care of generating the page navigation links, which allow the user to move forward and backward through the result set.

Zend _ Paginator还负责生成页面导航链接，从而允许用户向前或向后浏览结果集。

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These backward and forward page buttons can also be reversed on the settings to fit the use or preferences of customers (left or right handed).

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