I need help on how to add commands to a minecraft server things like i want to mass delete blocks and i want to do /z air to do that the way it would work is you place 2 blocks to determine the edges. Also it wont let me place special blocks like water and lava. Another thing is when i choose my server from the server list on Minecraft.net it says the server is down How do i fix it? I will appreciate any help anyone can offer

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