diff --git a/README.md b/README.md
index 8b6364c..23df104 100644
--- a/README.md
+++ b/README.md
@@ -27,9 +27,18 @@ This is a variant optimized and expanded by fumiama. The original repo is [gonfv
 The Introduction above is copied from the original repo. I had evolved that repo again to fit my needs. Here are the supported functions now.
 
 - [x] Parse and save document
-- [x] Edit simple text (color, size, alignment, ...)
+- [x] Edit text (color, size, alignment, link, ...)
 - [x] Edit picture
 - [x] Edit table
+- [x] Edit shape
+- [x] Edit canvas
+- [x] Edit group
+
+## Quick Start
+```bash
+go run cmd/main/main.go -u
+```
+And you will see two files generated under `pwd` with the same contents as below.
 
 ## License
 
diff --git a/structdoc.go b/structdoc.go
index 5d7a852..642ac8f 100644
--- a/structdoc.go
+++ b/structdoc.go
@@ -101,7 +101,7 @@ func (b *Body) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
 
 // Document <w:document>
 type Document struct {
-	XMLName xml.Name `xml:"http://schemas.openxmlformats.org/wordprocessingml/2006/main document"`
+	XMLName xml.Name `xml:"w:document"`
 	XMLW    string   `xml:"xmlns:w,attr"`             // cannot be unmarshalled in
 	XMLR    string   `xml:"xmlns:r,attr,omitempty"`   // cannot be unmarshalled in
 	XMLWP   string   `xml:"xmlns:wp,attr,omitempty"`  // cannot be unmarshalled in