Change (Increase or Decrease) The Number of Recently Closed Tabs or Remembered by Firefox to Reopen or Undo改变（增加或减少）的人数最近关闭的标签，或记住Firefox的重开或撤消
Firefox has a great feature which allows user to undo or recopy last or recently closed tabs, an extension from session restore feature. Firefox拥有一个伟大的功能，让用户可以撤消或recopy最后或最近关闭的标签，推广，从会议的还原功能。 Re-open ore restore a closed tab is especially useful when user accidentally click on the close tab tab.重新开放矿石还原一个封闭的标签是特别有用当用户不小心按一下该关闭标签标签。 Firefox user can restore latest closed tab by right clicking on tab bar, and select Undo Close Tab in the context menu, or click on History menu -> Recently Closed Tabs to reopen more exited tabs. Firefox用户可以还原最新的封闭标签右击对标签栏，并选择撤消关闭标签，在上下文菜单中，或按对历史的菜单-> “最近关闭的标签，重开更多的退出标签。
By default, Firefox is saving the last ten (10) closed tabs in its history on user profiles.默认情况下， Firefox是挽救去年10 （ 10 ）封闭的标签，在其历史上对用户配置文件。 Some users may feel that the amount of last closed tabs is too few as he or she frequently open and close tabs, or too much due to privacy concern.一些用户可能觉得金额去年关闭的标签是太少了，因为他或她经常打开和关闭标签，还是太多了，由于隐私的关注。 In any case, Firefox user can easily change the maximum number of the undo closed tabs history it keeps.在任何情况下， Firefox的用户可以轻易改变的最大数目撤消关闭标签的历史，它不断。
To set a new value for the maximum closed tabs that Firefox browser remembers to restore or reopen the closed tabs, type about:config in the Location Bar of Firefox, and confirm the warning by clicking I’ll be care, I promise! button.设立一个新的价值的最高封闭标签， Firefox浏览器的回忆，来恢复或重新封闭，制表符，键入关于：配置 ，在位置栏中的Firefox ，并确认警告按一下，我会予以照顾，我答应！按钮。 Locate or search for the following preference parameter name:找到或寻找在以下偏好参数名称：
browser.sessionstore.max_tabs_undo browser.sessionstore.max_tabs_undo
The default value for browser.sessionstore.max_tabs_undo is 10.预设值为browser.sessionstore.max_tabs_undo是10 。 Double click on the preference name, and then enter a new integer value for the parameter.双击就偏好的名称，然后进入了一个新的整数值为参数。
IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要说明 ：这是一个机器翻译网页是“按原样”提供的担保。 Machine translation may be difficult to understand.机器翻译可能很难理解。 Please refer to请参阅 original English article英文原版的文章 whenever possible.只要有可能。
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