diff --git a/docs/definitions.md b/docs/definitions.md
index a17e7bd..f93a380 100644
--- a/docs/definitions.md
+++ b/docs/definitions.md
@@ -221,10 +221,12 @@ results in
 
 ```
 **bold text**
+__bold text__
 ```
 results in
 ```html
 <strong>bold text</strong>
+<strong>bold text</strong>
 ```
 
 ## emphasized