Savewarp

Savewarping or World Box Change is a glitch that makes an autosave in the wrong chunk, creating a save file with a normally impossible spawning point. There are two ways to set up a Savewarp: The new spawning point can be at a checkpoint, a gem or some other spot.
 * Dying in a chunk directly connected to the one you last autosaved in, all without activating checkpoints so you respawn at the world crate. Works only on the NTSC XBOX version.
 * Getting a checkpoint while Cortex (or something else) is on a world checkpoint. Works on every version.

History
In 2014 Gpro found the NTSC XBOX only glitch and BetaM made a video with some examples. In 2018 Bandicraft discovered the second kind of Savewarping. . They later made another video with other examples.

H Skip practice file
Using the Cortex method, make an autosave at the  chunk.

Dimension Skip practice file
Using the Cortex method, make an autosave at the  chunk.