Other issues caused by updating the page with Ajax include "breaking" the browser's back button, and the URL in the address bar not reflecting the entire state of the page, preventing bookmarking.

由Ajax更新页面造成的其他问题还包括：“破坏了”浏览器的后退按钮，地址栏中的URL也无法反映页面的整个状态，妨碍了设置书签。

youdao

Is this something like a reset button or a breaking up out into a new future?

WHITEHOUSE: President Obama and Chancellor Merkel Press Conference