Missing menu bar after document settings

[Leogo]

Hello Community,

I configured the pdf file here: File-Properties-Instal View-User Interface Options and marked the Hide menu bar

I did it for a test, I didn't know where it would lead. As a result, I can no longer open this menu and remove this checkmark.

Later I found information on the portal that it turns out you need some hotkeys to reopen the menu. I do not know what keys to use for this.

I have a question for you. How can I get the menu back?

Thank you in advance for your support!

[Bernd Alheit · Accepted solution]

Press key F9