diff --git a/src/MiniDocs/String.extension.st b/src/MiniDocs/String.extension.st
new file mode 100644
index 0000000..021c838
--- /dev/null
+++ b/src/MiniDocs/String.extension.st
@@ -0,0 +1,8 @@
+Extension { #name : #String }
+
+{ #category : #'*MiniDocs' }
+String >> asDashedLowercase [
+	"I convert phrases like 'This is a phrase' into 'this-is-a-phrase'."
+	
+	^ '-' join: (self substrings collect: [:each | each asLowercase ])
+]