Hello, I'm writing a word document about Valve Hammer Editor for my finals and I stumbled upon "Cordon" in Filter Control Toolbar and I don't know what it does. Wiki says nothing
Valve Hammer Editor - SteamGridDB
Opening Official Maps in Hammer [Counter-Strike: Global Offensive] [Tutorials]
Valve Hammer Editor | Half-Life Wiki | Fandom
Valve Hammer Editor Beta 3.5 file - Half-Life - Mod DB