diff --git a/gjrc/gjrc.go b/gjrc/gjrc.go
index bca108f..8c17041 100644
--- a/gjrc/gjrc.go
+++ b/gjrc/gjrc.go
@@ -1,47 +1,3 @@
-/*
-Package gjrc offers generic utilities to work with JSON-based RESTful API.
-
-Sample usage:
-
-	package main
-
-	import (
-		"fmt"
-
-		"github.com/btnguyen2k/consu/gjrc"
-		"github.com/btnguyen2k/consu/reddo"
-	)
-
-	func main() {
-		// // pre-build a http.Client
-		// httpClient := &http.Client{}
-		// client := NewGjrc(httpClient, 0)
-
-		// or, a new http.Client is created with 10 seconds timeout
-		client := NewGjrc(nil, 10*time.Second)
-
-		url := "https://httpbin.org/post"
-		resp := client.PostJson(url, map[string]interface{}{"key1": "value", "key2": 1, "key3": true})
-
-		val1, err := resp.GetValueAsType("json.key1", reddo.TypeString)
-		if err != nil {
-			panic(err)
-		}
-		fmt.Printf("%#v\n", val1) // output: "value"
-
-		val2, err := resp.GetValueAsType("json.key2", reddo.TypeInt)
-		if err != nil {
-			panic(err)
-		}
-		fmt.Printf("%#v\n", val2) // output: 2
-
-		val3, err := resp.GetValueAsType("json.key3", reddo.TypeBool)
-		if err != nil {
-			panic(err)
-		}
-		fmt.Printf("%#v\n", val3) // output: true
-	}
-*/
 package gjrc
 
 import (
@@ -60,11 +16,6 @@ import (
 	"github.com/btnguyen2k/consu/semita"
 )
 
-const (
-	// Version defines version number of this package
-	Version = "0.2.1"
-)
-
 // NewGjrc creates a new Gjrc object.
 // It reuses the http.Client if supplied (then timeout is ignored). Otherwise, a new client is created with the
 // specified timeout.
diff --git a/gjrc/module.go b/gjrc/module.go
new file mode 100644
index 0000000..5863c92
--- /dev/null
+++ b/gjrc/module.go
@@ -0,0 +1,53 @@
+/*
+Package gjrc offers generic utilities to work with JSON-based RESTful API.
+
+Sample usage:
+
+	package main
+
+	import (
+		"fmt"
+
+		"github.com/btnguyen2k/consu/gjrc"
+		"github.com/btnguyen2k/consu/reddo"
+	)
+
+	func main() {
+		// // pre-build a http.Client
+		// httpClient := &http.Client{}
+		// client := NewGjrc(httpClient, 0)
+
+		// or, a new http.Client is created with 10 seconds timeout
+		client := NewGjrc(nil, 10*time.Second)
+
+		url := "https://httpbin.org/post"
+		resp := client.PostJson(url, map[string]interface{}{"key1": "value", "key2": 1, "key3": true})
+
+		val1, err := resp.GetValueAsType("json.key1", reddo.TypeString)
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("%#v\n", val1) // output: "value"
+
+		val2, err := resp.GetValueAsType("json.key2", reddo.TypeInt)
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("%#v\n", val2) // output: 2
+
+		val3, err := resp.GetValueAsType("json.key3", reddo.TypeBool)
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("%#v\n", val3) // output: true
+	}
+*/
+package gjrc
+
+const (
+	// Version defines version number of this package
+	Version = "0.2.1"
+)
+
+// This file contains module's metadata only, which is package level documentation and module Version string.
+// Module's code should go into other files.