In technical documentation, there are document "types" (similar to how there are data types).
The most common types are:
Procedural: these are How To docs, the HOW information, with step-by-step instructions for accomplishing a task. This is what most people are looking for when they open the docs... and best practice is to separate the procedural docs from long, lengthy conceptual or reference docs.
Conceptual: these docs provide the WHY information, and explain when to use a feature (or when not to!), and general concepts behind the feature or functionality.
Reference: this is typically tables or lists of reference information, such as configuration values, or functions, or most commmonly APIs.
We have templates for the different types, to make it super-easy for whomever wants to contribute some documentation!