That is the location point for your automatic zone.
It will search for the bounding walls (zone boundaries) around this marker when you place the zone and also when you update the zones.
You can move it but you must leave it inside the zone boundaries otherwise your zone will move when you update.
It will not print so just ignore it.
The only way to turn it of is to make the zone a 'manual' zone.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11