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-rw-r--r--docs/templating/variables.md3
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/templating/variables.md b/docs/templating/variables.md
index 0d316df..552baa3 100644
--- a/docs/templating/variables.md
+++ b/docs/templating/variables.md
@@ -96,3 +96,6 @@ Languages are defined by `{ id: 'en', title: 'English' }`.
| Variable | Description |
| -------- | ----------- |
| `glossary.path` | Path to the Glossary in the book |
+
+### Limitations
+Variables won't expand when used inside `SUMMARY.md`.