# Documentation

> How to use OpenHelvetia, what things mean exactly, and why they are built the way they are.


The documentation is divided into five sections, by what readers want: to learn something (tutorials), to get a task done (how-to guides), to run and call the modules (infrastructure), to look something up (reference), to understand something (explanation). Every page belongs to exactly one section and says which at the top. The sections and their pages are on the left; state, evidence and downloads of every module are on the infrastructure page.

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Source: docs/en/index.md