I'm building a world in Minecraft (Hogwarts) and I want to have the great hall and my requirement is to have the celing changing via command blocks. I tried to do that, but the command block said "cannot place blocks outside the world". Is there a vanilla way to get around this or are we needing to wait for mods and put a chunk loader in those chunks.
I figured it out - I did /setworldspawn and the chunks that I wanted are loaded all the time now. Feel free to add a way to keep them loaded (mainly for command block use) if I decide to change world spawn again.