Open the output history of a rule, select the execution runs that you want to delete, and click delete. You then have the following two options.

打开规则的输出历史记录，选择想要删除的执行运行，并单击Delete。

youdao

To delete the user name, click delete button.

要删除用户名，单击“删除”按钮。

youdao

Select input [JOB] and click Delete.

选择input [job]，然后单击Delete。

youdao

It is clear that real competition in search is far from being a click away, and that creativity and true innovation face the delete button.

ECONOMIST: Letters

If the icon doesn't provide a menu, press Ctrl-Alt-Delete, select the name of the tray application, and click the End Task button.

CNN: Sluggish PC? Give it a workout

As a beginner, you'll want to familiarize yourself with Delete first, as that's what you need to select things -- to click on them with your eyes, if you will.

ENGADGET: Hands-on with Tobii REX, a peripheral that brings eye-tracking to any Windows 8 PC (video)