---
slug: core-concepts/memory-fragments
−section: Core Concepts
−order: 2
+section: Understanding Usable
+order: 3
status: published
description: "What memory fragments are, how they are structured, and how to choose a useful scope."
---
··· 77 unchanged lines ···
- [Fragment types](/usable/core-concepts/fragment-types) describe the role a fragment plays.
- [Frontmatter and metadata](/usable/core-concepts/frontmatter-and-metadata) explains information stored alongside the body.
- [Tags and summaries](/usable/core-concepts/tags-and-summaries) covers the signals that make fragments easier to scan and retrieve.