In Roblox, "OP" stands for Overpowered, and "FE" stands for Filtering Enabled. An FE Admin Panel is a graphical user interface (GUI) that allows a player to execute commands that, in theory, bypass the game's security to affect the world or other players.

"Who’s banning who now?" Leo chuckled, his fingers dancing over the function. He made a giant, red scrolling banner appear at the top of every player's screen: SYSTEM UPDATE: GRAVITY IS NOW OPTIONAL. He toggled the [Global Gravity] slider to zero.