diff --git a/README.md b/README.md
index 1acbb3b..a2b9f0a 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,9 @@
 		bar := p.AddBar(int64(total),
 			mpb.PrependDecorators(
 				decor.StaticName(name, 0, 0),
+				// DSyncSpace is shortcut for DwidthSync|DextraSpace
+				// means sync the width of respective decorator's column
+				// and prepend one extra space.
 				decor.Percentage(3, decor.DSyncSpace),
 			),
 			mpb.AppendDecorators(
diff --git a/examples/simple/main.go b/examples/simple/main.go
index 0d472f2..60d7f8f 100644
--- a/examples/simple/main.go
+++ b/examples/simple/main.go
@@ -22,6 +22,9 @@
 		bar := p.AddBar(int64(total),
 			mpb.PrependDecorators(
 				decor.StaticName(name, 0, 0),
+				// DSyncSpace is shortcut for DwidthSync|DextraSpace
+				// means sync the width of respective decorator's column
+				// and prepend one extra space.
 				decor.Percentage(3, decor.DSyncSpace),
 			),
 			mpb.AppendDecorators(