Minecraft wiki entry for World_boundary, associated text: 1 Definition
1.1 Java Edition
1.1.1 Horizontal limits
1.1.2 Vertical limits
1.2 Bedrock Edition
1.2.1 Horizontal limits
1.2.2 Vertical limits
2 Effects
2.1 Java Edition
3 History
3.1 Horizontal boundaries
3.2 Vertical boundaries
3.3 Older version effects
3.3.1 Infdev
3.3.2 Fake chunks
3.3.3 Console info
4 Issues
5 Trivia
6 References