Board Thread:Suggestions forum/@comment-26210095-20150604214356/@comment-27723099-20150609151022

Just for information and clarification:

A "chunk" is an area of 16x16 blocks. A chunk consists of "sections" that are 16 blocks high layers in a chunk. Each section (16x16x16 = 4096 blocks) has around 10KB of information (for each block: 8 bit block ID, 4 bit block metadata, 4 bit block light, 4 bit sky light).

Chunks are 16x16x16 (and not 20x20x20) because 16 = 2^4. Computers work with binary data. Using decimal numbers for basic data structures would make it less efficient.