diff --git a/README.md b/README.md
index 46a8295..f833c89 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,8 @@
 # Textline Detection
 
 ## Introduction
-This tool performs textline detection from document image data and returns the results as PAGE-XML.
+This tool performs printspace, region and textline detection from document image
+data and returns the results as PAGE-XML.
 
 ## Installation