rcmds.backpackrcmds.exempt.backpackrcmds.others.backpackreset_backpack_death/backpack opens a secure container for items that persists through server restarts and deaths (if configured).
The backpack for other players can be viewed using /backpack playerName if the player does not have the
rcmds.exempt.backpack permission and the person using the command has the rcmds.others.backpack permission.
/backpack - Opens a personal storage container for the player.
/backpack joe - Opens the personal storage container for joe.
This command supports online name-completion.