diff --git a/README.asc b/README.asc
index 76415c1..bad48b9 100644
--- a/README.asc
+++ b/README.asc
@@ -399,6 +399,13 @@ FAQ.md                  100% 1831     1.8KB/s   00:00
 GRAMMAR.md              100% 1666     1.6KB/s   00:00
 ```
 
+A variadic parameter with a default argument will accept zero or more arguments:
+
+```make
+commit MESSAGE +FLAGS='':
+  git commit {{FLAGS}} -m "{{MESSAGE}}"
+```
+
 `{{...}}` substitutions may need to be quoted if they contains spaces. For example, if you have the following recipe:
 
 ```make