diff --git a/docs/specification.mdx b/docs/specification.mdx
index 0e8d05b..e2cc97a 100644
--- a/docs/specification.mdx
+++ b/docs/specification.mdx
@@ -7,14 +7,15 @@ This document defines the Agent Skills format.
 
 ## Directory structure
 
-A skill is a directory containing at minimum a `SKILL.md` file:
+A skill is a directory containing, at minimum, a `SKILL.md` file:
 
 ```
 skill-name/
 ├── SKILL.md          # Required: metadata + instructions
 ├── scripts/          # Optional: executable code
 ├── references/       # Optional: documentation
-└── assets/           # Optional: templates, resources
+├── assets/           # Optional: templates, resources
+└── ...               # Any additional files or directories
 ```
 
 ## `SKILL.md` format