Zombie Appearance File

[Audax]

In the Gamemode_zombie.zip there is a file called Zombie_Appearances.txt. What it does is it randomly chooses the zombie's appearance. There are many diffrent outcomes so I am wondering, how did Rotondo or nitram make this file with all these appearances? They could not have possibly typed it all out. I am wondering this so I can edit it so zombies do not have hats and have diffrent faces.

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[Audax]

No edit.

I found out in Notepad I can use Ctrl + H to find something and replace it. I got rid of the hats, faces, and medieval decals, so it made it more 'Modern Day Zombies'. In the file though there is pack = "#"; and secondPack = "#";. Are pack and second pack the Backpack, Cape, Armor, Epaulets etc. Nodes?