Welcome to the MCEdit wiki!
MCEdit is a versatile map editor, designed for moving blocks from one level to another. With it, you can open a level of nearly any type and fly around in glorious 3D with multiple levels of detail! Select millions of blocks and clone them anywhere else in the level. Fill a boxy selection with the block of your choice, or replace one kind of block with another. Export blocks to a "schematic" file for later use. Import a schematic or an entire level into any world using the crane. Move the player or his spawn point. Create and and remove chunks from the world. Fill blackened areas with light. Find bugs!
Want to help out with coding and submit patches and bugfixes? Be sure to read Contributing first.