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title: STIX Concepts
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This page describes several central STIX concepts that cut across all of the core STIX data types

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* [IDs](ids) - Describes the basic usage of STIX IDs
* [Confidence](confidence) - Describes how to use the confidence structure to mark STIX constructs with confidence
* [Structured Text](structured-text) - Describes how to use STIX structured text fields for both plain text and markup
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* [Versioning](versioning) - Describes a few different versioning scenarios and how those are handled in STIX
* [Data Markings](data-markings) - Describes how to use data markings to mark STIX content
* [Relationships](relationships) - Describes how to use STIX relationships
* [xsi:type](xsi-type) - Describes the STIX usage of xsi:type for core components, extension points, and controlled vocabularies

---
layout: flat
title: STIX Concepts
---

This page describes several central STIX concepts that cut across all of the core STIX data types

* [Controlled Vocabularies](controlled-vocabularies) - Describes how to use
    values from a default vocabulary, define custom vocabularies, or use values
    outside of any vocabulary.
* [Data Markings](data-markings) - Describes how to use data markings to mark STIX content.
* [Relationships](relationships) - Describes how to use STIX relationships.
* [Versioning](versioning) - Describes a few different versioning scenarios and how those are handled in STIX.
* [xsi:type](xsi-type) - Describes the STIX usage of xsi:type for core components, extension points, and controlled vocabularies.

Add link controlled vocabs concept
Add link controlled vocabs concept
