This mod makes double doors open or close together, by right-clicking or redstone-powering one of them.
It's recommended, but not required to install the mod both server and client side.
If installed only on server:
Everything will work, but when you right-click a double door it won't open in perfect sync.
If installed only on client:
You can open double doors by hand. This is done by telling the server you right-clicked both doors, so it might not work on servers with anti-cheat mods/plugins.
