How markings make fortnite mobile?

How do I mark items so minis or something and how do I mark places that are in front of you so without a card to open?

Then press the Fortnite icon for a long time

then there are different possibilities

there you go on deinstaliern

they will ask you if you really want that

then press yes

then go playstore and get pubg

Little cherz

I laugh later, ok?