diff --git a/example/cancel/main.go b/example/cancel/main.go
index fdecde9..fb8da71 100644
--- a/example/cancel/main.go
+++ b/example/cancel/main.go
@@ -19,7 +19,7 @@
 	var wg sync.WaitGroup
 	ctx, cancel := context.WithTimeout(context.Background(), 4*time.Second)
 	defer cancel()
-	p := mpb.New(ctx).SetWidth(64)
+	p := mpb.New().SetWidth(64).WithContext(ctx)
 
 	name1 := "Bar#1:"
 	bar1 := p.AddBar(50).
diff --git a/example/io/multiple/main.go b/example/io/multiple/main.go
index 4ca6386..0c1b178 100644
--- a/example/io/multiple/main.go
+++ b/example/io/multiple/main.go
@@ -19,7 +19,7 @@
 	url2 := "https://homebrew.bintray.com/bottles/libtiff-4.0.7.sierra.bottle.tar.gz"
 
 	var wg sync.WaitGroup
-	p := mpb.New(nil).SetWidth(60)
+	p := mpb.New().SetWidth(60)
 
 	for i, url := range [...]string{url1, url2} {
 		wg.Add(1)
diff --git a/example/io/single/main.go b/example/io/single/main.go
index 617bb9a..b36cd76 100644
--- a/example/io/single/main.go
+++ b/example/io/single/main.go
@@ -35,7 +35,7 @@
 	}
 	defer dest.Close()
 
-	p := mpb.New(nil).SetWidth(64)
+	p := mpb.New().SetWidth(64)
 
 	bar := p.AddBar(size).
 		PrependCounters("%3s / %3s", mpb.UnitBytes, 18, 0).
diff --git a/example/prependETA/main.go b/example/prependETA/main.go
index 6acc66d..6a615b0 100644
--- a/example/prependETA/main.go
+++ b/example/prependETA/main.go
@@ -16,8 +16,7 @@
 func main() {
 
 	var wg sync.WaitGroup
-	p := mpb.New(nil).SetWidth(64)
-	// p := mpb.New(nil).RefreshRate(80 * time.Millisecond).SetWidth(64)
+	p := mpb.New().SetWidth(64)
 
 	name1 := "Bar#1:"
 	bar1 := p.AddBar(50).
diff --git a/example/prependElapsed/main.go b/example/prependElapsed/main.go
index b5194c7..e39e387 100644
--- a/example/prependElapsed/main.go
+++ b/example/prependElapsed/main.go
@@ -16,8 +16,7 @@
 func main() {
 
 	var wg sync.WaitGroup
-	p := mpb.New(nil).SetWidth(64)
-	// p := mpb.New(nil).RefreshRate(80 * time.Millisecond).SetWidth(64)
+	p := mpb.New().SetWidth(64)
 
 	name1 := "Bar#1:"
 	bar1 := p.AddBar(50).
diff --git a/example/remove/main.go b/example/remove/main.go
index 4e64c7c..9d7ff0f 100644
--- a/example/remove/main.go
+++ b/example/remove/main.go
@@ -16,8 +16,7 @@
 func main() {
 
 	var wg sync.WaitGroup
-	p := mpb.New(nil).SetWidth(64)
-	// p := mpb.New(nil).RefreshRate(100 * time.Millisecond).SetWidth(64)
+	p := mpb.New().SetWidth(64)
 
 	name1 := "Bar#1:"
 	bar1 := p.AddBar(50).
diff --git a/example/simple/main.go b/example/simple/main.go
index 4a8b5ad..4bdfda7 100644
--- a/example/simple/main.go
+++ b/example/simple/main.go
@@ -11,7 +11,7 @@
 
 func main() {
 	var wg sync.WaitGroup
-	p := mpb.New(nil)
+	p := mpb.New()
 	wg.Add(3) // add wg delta
 	for i := 0; i < 3; i++ {
 		name := fmt.Sprintf("Bar#%d:", i)
@@ -31,6 +31,4 @@
 	}
 	wg.Wait() // Wait for goroutines to finish
 	p.Stop()  // Stop mpb's rendering goroutine
-	// p.AddBar(1) // panic: you cannot reuse p, create new one!
-	fmt.Println("finish")
 }
diff --git a/example/singleBar/main.go b/example/singleBar/main.go
index ae77c67..f053cae 100644
--- a/example/singleBar/main.go
+++ b/example/singleBar/main.go
@@ -9,10 +9,8 @@
 
 func main() {
 	// Star mpb's rendering goroutine.
-	// If you don't plan to cancel, feed with nil
-	// otherwise provide context.Context, see cancel example
-	p := mpb.New(nil)
-	// Set custom width for every bar, which mpb will contain
+	p := mpb.New()
+	// Set custom width for every bar, which mpb will render
 	// The default one in 70
 	p.SetWidth(80)
 	// Set custom format for every bar, the default one is "[=>-]"
diff --git a/example/sort/main.go b/example/sort/main.go
index 33e1cee..f3b5386 100644
--- a/example/sort/main.go
+++ b/example/sort/main.go
@@ -44,7 +44,7 @@
 func main() {
 
 	var wg sync.WaitGroup
-	p := mpb.New(nil).SetWidth(60).BeforeRenderFunc(sortByProgressFunc())
+	p := mpb.New().SetWidth(60).BeforeRenderFunc(sortByProgressFunc())
 
 	name1 := "Bar#1:"
 	bar1 := p.AddBar(100).
diff --git a/example/stress/main.go b/example/stress/main.go
index 259784d..028730d 100644
--- a/example/stress/main.go
+++ b/example/stress/main.go
@@ -17,7 +17,7 @@
 func main() {
 
 	var wg sync.WaitGroup
-	p := mpb.New(nil)
+	p := mpb.New()
 	wg.Add(totalBars)
 
 	for i := 0; i < totalBars; i++ {
diff --git a/example_test.go b/example_test.go
index cdedaab..c7ea9ee 100644
--- a/example_test.go
+++ b/example_test.go
@@ -4,6 +4,7 @@
 	"fmt"
 	"math/rand"
 	"time"
+	"unicode/utf8"
 
 	"github.com/vbauerster/mpb"
 )
@@ -12,7 +13,7 @@
 	// Star mpb's rendering goroutine.
 	// If you don't plan to cancel, feed with nil
 	// otherwise provide context.Context, see cancel example
-	p := mpb.New(nil)
+	p := mpb.New()
 	// Set custom width for every bar, which mpb will contain
 	// The default one in 70
 	p.SetWidth(80)
@@ -39,7 +40,7 @@
 }
 
 func ExampleBar_InProgress() {
-	p := mpb.New(nil)
+	p := mpb.New()
 	bar := p.AddBar(100).AppendPercentage(5, 0)
 
 	for bar.InProgress() {
@@ -50,12 +51,14 @@
 
 func ExampleBar_PrependFunc() {
 	decor := func(s *mpb.Statistics, myWidth chan<- int, maxWidth <-chan int) string {
-		str := fmt.Sprintf("%d/%d", s.Current, s.Total)
-		return fmt.Sprintf("%8s", str)
+		str := fmt.Sprintf("%3d/%3d", s.Current, s.Total)
+		myWidth <- utf8.RuneCountInString(str)
+		max := <-maxWidth
+		return fmt.Sprintf(fmt.Sprintf("%%%ds", max+1), str)
 	}
 
 	totalItem := 100
-	p := mpb.New(nil)
+	p := mpb.New()
 	bar := p.AddBar(int64(totalItem)).PrependFunc(decor)
 
 	for i := 0; i < totalItem; i++ {
@@ -66,12 +69,14 @@
 
 func ExampleBar_AppendFunc() {
 	decor := func(s *mpb.Statistics, myWidth chan<- int, maxWidth <-chan int) string {
-		str := fmt.Sprintf("%d/%d", s.Current, s.Total)
-		return fmt.Sprintf("%8s", str)
+		str := fmt.Sprintf("%3d/%3d", s.Current, s.Total)
+		myWidth <- utf8.RuneCountInString(str)
+		max := <-maxWidth
+		return fmt.Sprintf(fmt.Sprintf("%%%ds", max+1), str)
 	}
 
 	totalItem := 100
-	p := mpb.New(nil)
+	p := mpb.New()
 	bar := p.AddBar(int64(totalItem)).AppendFunc(decor)
 
 	for i := 0; i < totalItem; i++ {
diff --git a/progress_test.go b/progress_test.go
index 773068e..8ce36fe 100644
--- a/progress_test.go
+++ b/progress_test.go
@@ -7,7 +7,7 @@
 
 func TestAddBar(t *testing.T) {
 	var buf bytes.Buffer
-	p := New(nil).SetWidth(60).SetOut(&buf)
+	p := New().SetWidth(60).SetOut(&buf)
 	count := p.BarCount()
 	if count != 0 {
 		t.Errorf("Count want: %q, got: %q\n", 0, count)
@@ -24,7 +24,7 @@
 }
 
 func TestRemoveBar(t *testing.T) {
-	p := New(nil)
+	p := New()
 	b := p.AddBar(10)
 
 	if !p.RemoveBar(b) {