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I am new to Docker and Qemu. I am thinking about using this Qemu

I am trying to understand the following command:

docker run --rm --privileged multiarch/qemu-user-static:register --reset
Why did they include --reset, and what significance does the register tag have?
Thank you in advance!
I guess --reset it means what they wrote in the ReadMe: Remove all registered binfmt_misc before, so by looking into register.sh you can see the following:
if [ "${1}" = "--reset" ]; then
    shift
    find /proc/sys/fs/binfmt_misc -type f -name 'qemu-*' -exec sh -c 'echo -1 > {}' \;
So when you pass --reset it will disable everything related to qemu and the register tag itself i guess they use to enable binfmt_misc before using Qemu because if it was not found the container will fail:
if [ ! -d /proc/sys/fs/binfmt_misc ]; then
    echo "No binfmt support in the kernel."
    echo "  Try: '/sbin/modprobe binfmt_misc' from the host"
    exit 1
        
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