diff --git a/examples/realtime-advanced/main.go b/examples/realtime-advanced/main.go
index a16c58b0..f3ead476 100644
--- a/examples/realtime-advanced/main.go
+++ b/examples/realtime-advanced/main.go
@@ -20,7 +20,7 @@ func ConfigRuntime() {
 	fmt.Printf("Running with %d CPUs\n", nuCPU)
 }
 
-// StartWrokers start starsWorker by goroutine.
+// StartWorkers start starsWorker by goroutine.
 func StartWorkers() {
 	go statsWorker()
 }
diff --git a/mode.go b/mode.go
index 9df4e45f..e55b4d1f 100644
--- a/mode.go
+++ b/mode.go
@@ -11,11 +11,15 @@ import (
 	"github.com/gin-gonic/gin/binding"
 )
 
+// ENV_GIN_MODE indicates enviroment name for gin mode.
 const ENV_GIN_MODE = "GIN_MODE"
 
 const (
+	// DebugMode indicates gin mode is debug.
 	DebugMode   = "debug"
+	// ReleaseMode indicates gin mode is relase.
 	ReleaseMode = "release"
+	// TestMode indicates gin mode is test.
 	TestMode    = "test"
 )
 const (
@@ -42,6 +46,7 @@ func init() {
 	SetMode(mode)
 }
 
+// SetMode sets gin mode according to input string.
 func SetMode(value string) {
 	switch value {
 	case DebugMode, "":
@@ -59,14 +64,18 @@ func SetMode(value string) {
 	modeName = value
 }
 
+// DisableBindValidation closes the default validator.
 func DisableBindValidation() {
 	binding.Validator = nil
 }
 
+// EnableJsonDecoderUseNumber sets true for binding.EnableDecoderUseNumberto to
+// call the UseNumber method on the JSON Decoder instance.
 func EnableJsonDecoderUseNumber() {
 	binding.EnableDecoderUseNumber = true
 }
 
+// Mode returns currently gin mode.
 func Mode() string {
 	return modeName
 }
diff --git a/render/html.go b/render/html.go
index 4d3d5812..6696ece9 100644
--- a/render/html.go
+++ b/render/html.go
@@ -46,7 +46,7 @@ type HTML struct {
 
 var htmlContentType = []string{"text/html; charset=utf-8"}
 
-// Instance (HTMLProduction) returns an HTML instance which it realizes Render interface..
+// Instance (HTMLProduction) returns an HTML instance which it realizes Render interface.
 func (r HTMLProduction) Instance(name string, data interface{}) Render {
 	return HTML{
 		Template: r.Template,
@@ -55,7 +55,7 @@ func (r HTMLProduction) Instance(name string, data interface{}) Render {
 	}
 }
 
-// Instance (HTMLDebug) returns an HTML instance which it realizes Render interface..
+// Instance (HTMLDebug) returns an HTML instance which it realizes Render interface.
 func (r HTMLDebug) Instance(name string, data interface{}) Render {
 	return HTML{
 		Template: r.loadTemplate(),