在Visual Studio 2008中选择时突出显示关键字

不久前，我设法使Visual Studio 2008(C ++)进入一种状态，如果我要选择一个关键字(或与此相关的任何符号)，则可以通过双击或突出显示它来处理所有其他实例当前文件中该符号的符号也将突出显示.

A little while ago I managed to get Visual Studio 2008 (C++) into a state where, if I would select a keyword (or any symbol for that matter), by either double clicking on it or highlighting it, all other instances of that symbol within the current file would become highlighted too.

这是一个非常有用的功能.

This was a really useful feature.

从那时起，它就消失了，我也不知道该如何找回它.

Since then it's gone away, and I don't know how to get it back.

请帮助.

@Sander-就这样.谢谢！

@Sander - that'll be it. Thanks!