/back - Teleports player to his last death location
/spawn - Teleports player to Overworld spawn
/tpl - Teleports to [player] if he is online or last location if offline
/warp - Teleports player to server set warp [ID]
/admin invsee - If player is online, opens his inventory. Armor on left top row, Baubles on right top row.
/admin setwarp - Sets warp [ID] to current position of player
/admin delwarp - Deletes warp [ID]
/admin unclaim - Opens unclaiming gui
/admin unclaim_all <player | @a> - Unclaims all 's chunks from all dimensions
/admin server_info - Opens InfoGUI with technical informating about server, including Loaded Chunks
/admin worldborder on|off - Enables/disables world border
/admin worldborder get [dim] - Prints world border size for dimension [dim]
/admin worldborder set [dim] [radius] - Sets world border radius for dimension [dim]
/admin worldborder center - Sets world border center to current player's locatoin
/admin worldborder center [x] [z] - Sets world border center to x, z
You should use code or list formatting on the commands so people can read everything easier without needing to try and figure out what's what.
Refer to the Markdown guide: https://guides.github.com/features/mastering-markdown/