I no longer get a prompt when I delete a page: there is content within the page?

It seems one day, I pressed the Alt key and then clicked the delete button, and I won't be prompted later.
Where do I recover it?

최고의 답변: Robert at ID-Tasker

In Preferences - "reset warnings" or something like that..

Point 5:

The one on the left:

Legend

In Preferences - "reset warnings" or something like that..

Point 5:

The one on the left:

dublove작성자

Legend

Thank you.
I've seen it before but never cared.
Another trick learned.

가입하기