The four kinds of documentation

ref: Write the Docs

there are four distinct kinds of documentation - with four distinct functions

• learning-oriented tutorials
• goal-oriented how-to guides
• understanding-oriented discussions
• information-oriented reference material

Structuring documentation according to its four distinct functions helps ensure that each of them is adequately served. It also makes it far easier to write and maintain.

Another way to express the same figure. Credit: deezy in Obsidian Discord server.