diff --git a/src/atf.go b/src/atf.go
index 29e95bb06c0902a6b67ce9014fb82b36742c8ac9..a6982dcf593ca2c5103d818303bea27f7eba4a49 100644
--- a/src/atf.go
+++ b/src/atf.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"github.com/easysoft/zentaoatf/src/action"
 	"os"
 )
@@ -13,15 +14,22 @@ func main() {
 	var independentExpectFile bool
 	var fromUrl string
 
-	runSet := flag.NewFlagSet("atf run", flag.ContinueOnError)
+	runSet := flag.NewFlagSet("atf run: \nRun test scripts in specific folder", flag.ContinueOnError)
 	runSet.StringVar(&scriptDir, "d", "", "Directory that contains test scripts")
 	runSet.StringVar(&langType, "l", "", "Script Language like python, php etc.")
 
-	genSet := flag.NewFlagSet("atf gen", flag.ContinueOnError)
+	genSet := flag.NewFlagSet("atf gen: \nGenerate test scripts from zentao test cases", flag.ContinueOnError)
 	genSet.StringVar(&fromUrl, "u", "", "Remote interface for test case export")
 	genSet.StringVar(&langType, "l", "", "Script Language like python, php etc.")
 	genSet.BoolVar(&independentExpectFile, "e", false, "Save ExpectResult in an independent file or not")
 
+	if len(os.Args) < 2 {
+		fmt.Println("Usage of atf:")
+		fmt.Println("  atf run -help")
+		fmt.Println("  atf gen -help")
+		os.Exit(1)
+	}
+
 	switch os.Args[1] {
 	case "run":
 		if err := runSet.Parse(os.Args[2:]); err == nil {
diff --git a/xdoc/setup.txt b/xdoc/setup.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8cb9a9ef667d6d24b5e8a86fd19c3563336cf6c0
--- /dev/null
+++ b/xdoc/setup.txt
@@ -0,0 +1,3 @@
+GO_ENABLED=0 GOOS=linux GOARCH=amd64 go build src/atf.go
+
+CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build src/atf.go