wtf why didnt i know this
Well, everything but movement and triggers typically use servercmds. And typing /### makes the client instead send commandtoserver('###');
So yeah, everything in the admin menu has it's own /command.
Like /clearbrickgroup ### to clear someone's bricks by ID.
Also some other noteworthy commands:
/clearVehicles /resetVehicles - Admin only, handy for fixing/removing vehicles.
I believe bots also have the same command if you have bot holes enabled.
/cancelEvents - Not admin only, but can only be used outside of minigames. Cancels any pending events you have triggered, as well as any projectiles you have spawned via events. Helps to get out of traps in freebuilds.
/cancelAllEvents - This one is admin only, cancels ALL events in the server, including spawned projectiles, minigame or not. Handy for when someone decides to be an ass.