diff --git a/cmd.go b/cmd.go
index 78376a1..1776a8b 100644
--- a/cmd.go
+++ b/cmd.go
@@ -263,7 +263,7 @@ func (c *Command) initialize() {
 	}
 
 	// init for cmd flags parser
-	c.InitParser(cName)
+	c.Flags.Init(cName)
 
 	// format description
 	if len(c.Desc) > 0 {
diff --git a/gflag/args.go b/gflag/args.go
index e566716..bb0157d 100644
--- a/gflag/args.go
+++ b/gflag/args.go
@@ -15,6 +15,9 @@ import (
  * Arguments definition
  *************************************************************/
 
+// CliArgs alias of Arguments
+type CliArgs = Arguments
+
 // Arguments definition
 type Arguments struct {
 	// name inherited from gcli.Command
@@ -26,6 +29,8 @@ type Arguments struct {
 	// 	{"arg1", "this is second argument", false, false},
 	// ]
 	args []*Argument
+	// arg name max width
+	argWidth int
 	// record min length for args
 	// argsMinLen int
 	// record argument names and defined positional relationships
@@ -36,8 +41,6 @@ type Arguments struct {
 	// 	"arg1": 1,
 	// }
 	argsIndexes map[string]int
-	// arg name max width
-	argWidth int
 	// validate the args number is right
 	validateNum bool
 	// mark exists array argument
@@ -246,6 +249,9 @@ func (ags *Arguments) BuildArgsHelp() string {
  * Argument definition
  *************************************************************/
 
+// CliArg alias of Argument
+type CliArg = Argument
+
 // Argument a command argument definition
 type Argument struct {
 	*structs.Value
diff --git a/gflag/gflag_test.go b/gflag/gflag_test.go
index 3b03ff6..e363e19 100644
--- a/gflag/gflag_test.go
+++ b/gflag/gflag_test.go
@@ -494,14 +494,13 @@ func TestFlags_PrintHelpPanel(t *testing.T) {
 }
 
 func TestFlagMeta_Validate(t *testing.T) {
-	fm := gcli.FlagMeta{
+	fm := gflag.CliOpt{
 		Name:     "opt1",
 		Required: true,
 		Validator: func(val string) error {
 			if len(val) < 5 {
 				return errors.New("flag value min len is 5")
 			}
-
 			return nil
 		},
 	}
diff --git a/gflag/parser.go b/gflag/parser.go
index 66ce637..3f17a94 100644
--- a/gflag/parser.go
+++ b/gflag/parser.go
@@ -74,11 +74,13 @@ func New(nameWithDesc ...string) *Parser {
 	return p
 }
 
-// InitParser for parser
-func (p *Parser) InitParser(name string) {
-	if p.out == nil {
-		p.out = os.Stdout
+// Init for parser
+func (p *Parser) Init(name string) {
+	if p.out != nil {
+		return
 	}
+
+	p.out = os.Stdout
 	if p.cfg == nil {
 		p.cfg = newDefaultFlagConfig()
 	}
diff --git a/show/README.md b/show/README.md
index 9c59340..161dafa 100644
--- a/show/README.md
+++ b/show/README.md
@@ -19,3 +19,4 @@ contains `section, panel, padding, helpPanel, table, tree, title, list, multiLis
 - https://github.com/InVisionApp/tabular
 - https://github.com/gosuri/uitable
 - https://github.com/tomlazar/table
+- https://github.com/nwidger/jsoncolor