diff --git a/README.md b/README.md
index 68102f2..4f0dc9a 100644
--- a/README.md
+++ b/README.md
@@ -1870,6 +1870,10 @@ but returning a reusable `<Generator>`.
 
 #### `<Generator>.toArray()`
 
+```bnf
+<Generator>.toArray()
+    -> <function>
+```
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