No, that is only true for the standard input fields in the zone settings dialog and in the info palette. It seems that both locations do not allow more.
But if you make a new entry in the User Interface, you have no problems to fill in more than 31 characters. Good luck.
UI_DIALOG ""
UI_INFIELD "ROOM_NAME", 0,0, 444,20
Jochen Suehlo . AC12-27 . MAC OSX 14.4 . WIN11
GDL object creation:
b-prisma.de