---
type: types/type-spec.md
name: concept
description: Base type for concept pages - architectures, patterns, protocols, workflows, decisions or problems
schema: types/concept.schema.yaml
subtype_field: concept_type
base_dir: concepts
page_ref_fields: [related, sources]
guidance: types/concept.guidance.md
layout:
  architecture: {dir: architectures, title: Architekturen}
  pattern: {dir: patterns, title: Muster}
  protocol: {dir: protocols, title: Protokolle}
  workflow: {dir: workflows, title: Abläufe}
  decision: {dir: decisions, title: Entscheidungen}
  problem: {dir: problems, title: Problemstellungen}
---

# Concept

This instance's configuration for the `concept` type: its frontmatter fields as this schema
requires them, and the page skeleton `wikitool new concept` scaffolds. When to use this type and
how to write a conforming page is [types/concept.guidance.md](concept.guidance.md) -
`tools/wikitool types describe concept` composes both into one answer.

## Frontmatter

| Field | Required | Use |
|---|---:|---|
| `type` | Yes | `types/concept.md` |
| `concept_type` | Yes | One of: architecture, pattern, protocol, workflow, decision, problem |
| `tags` | No | Navigation tags for categorization |
| `created` | Yes | Creation date (YYYY-MM-DD) |
| `modified` | Yes | Date last changed (YYYY-MM-DD) |
| `related` | No | Titles of related concepts and entities |
| `sources` | No | Titles of the source pages backing this page's claims |
| `provenance` | Yes | sourced, general or mixed |
| `summary` | Yes | One-liner for `kb/index.md` |

## Template

The block below is page material, so it is written in this instance's KB language
(`kb/CONVENTIONS.md` `language:`) rather than in the control plane's English - its headings
become the headings of every page `wikitool new concept` scaffolds.

```markdown
# {name}

**Typ:** {concept_type|capitalize}

## Definition

TODO: Klare Definition dessen, was dieses Concept ist.

## Kernpunkte

- TODO: Kernpunkt 1
- TODO: Kernpunkt 2
- TODO: Kernpunkt 3

## Beispiele

- [[Entity 1]] - kurze Beschreibung
- [[Entity 2]] - kurze Beschreibung

## Wann zu verwenden

TODO: Bedingungen und Kontexte, in denen dieses Concept greift

## Wann NICHT zu verwenden

TODO: Anti-Muster, Warnungen oder Situationen, in denen es fehl am Platz ist

## Verwandte Concepts

- [[Related Concept 1]]
- [[Related Concept 2]]
```

The value behind `**Typ:**` stays the English enum value - that is what `search --field` filters
on. When `wikitool xref` adds a relationship, the two tool-managed sections for relationships and
cross-references appear as well; what they are called is the instance's decision in
`kb/CONVENTIONS.md` (`sections:`).