Reading "What is the difference between Halt and Shutdown commands?" , I generally have an idea what does the command shutdown does, with or without -h/-r options.

The "halt" command performs power off of the system to run-level 0 of the system.

The "shutdown" command performs a power off of the system to run-level 1 without -h or -r command.

What about the command "poweroff" does it goes into run-level 0 or 1 ? Is this the only main difference between these three commands?

Reading "What is the difference between Halt and Shutdown commands?" , I generally have an idea what does the command shutdown does, with or without -h/-r options.

The "halt" command performs power off of the system to run-level 0 of the system.

The "shutdown" command performs a power off of the system to run-level 1 without -h or -r command.

What about the command "poweroff" does it goes into run-level 0 or 1 ? Is this the only main difference between these three commands?