!ZAdmin--> To manage the server's ZombieMod settings.
(Server Administrators only).
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!ZClass--> To choose your Zombie Class and Human Skin.
!ZCoockies--> To configure your custom ZombieMod settings.
!ZSpawn--> To spawn in if you joined the server late.
!ZTele--> To teleport to the CT or T spawn point.
!ZHP--> To show your real health as a zombie.
!ZMarket--> To set up and buy weapons.
!ZVolume--> To adjust the volume to your liking.

!Class--> To choose your Play Style. Veterans' Classic or Latest-Generation Modern.

Also, if you type the command again, you can change your class whenever you want. Relax, your progress is saved (you DON'T lose anything, relax)..
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!XP--> Show your !XP point statistics!
!Skills--> To upgrade your weapons, equipment, and skills.
!Special--> To boost your skill's potential to the MAX.
!XPHelp--> A guide to how classes, skills, and potential work.
!Level--> To show your current Real Level.
!Rank--> To show your rank in the leaderboard.
!Top--> Shows the top-ranked players.
!Stats--> To show your server stats.