The C menu
Build or PvP, weapon loadout, HUD size: it all lives in C.
Open the context menu
Hold C. It is GMod’s context menu, customized on Elipcee. You change mode (Build / PvP), adjust the UI, pick loadout weapons, open links (Discord, site, collection).
Build and PvP
The C menu button does the same thing as !build and !pvp. If it is greyed out, you are in combat: 20 seconds after the last shot or damage.
The loadout
You pick the weapons you want in your slots. Server ARC9 guns are added there. It is not a permanent inventory: it is “what I spawn right now”.
HUD size and position
Chat, faction HUD, weapon selector, scoreboard: you can move and scale them from this menu. Settings persist between sessions.