How to use different assets for circular and square screens?

HI folks,
Just I found this TAG: #ZISROUND# (Device Screen Shape (true, if circular)

I assume, if an image has this tag (eg a BG image) this will only be visible in circular screens. So, I can use a bg image for square screens and other bg only for circular screens, but, how to add this TAG.

Thanks in advance.

1 Like

OH, Got it!, was so easy!