Hello,
In the parameters of your zone you'll find the function here:
Settings / Appearance / 2D Representation
And finally in this section you can add a hatch background
Christophe - FRANCEArchicad Designer and Teacher
Archicad 15 to 27 FRA FULL
OS 13 Ventura - MacBook Pro M2 max- 32Go RAM
"Quality is never an accident ; it's always the result of an intelligent effort" John Ruskin