diff --git a/_examples/decoratorsOnTop/main.go b/_examples/decoratorsOnTop/main.go
index c9fb9b7..379ce8f 100644
--- a/_examples/decoratorsOnTop/main.go
+++ b/_examples/decoratorsOnTop/main.go
@@ -24,7 +24,7 @@
 				decor.AverageETA(decor.ET_STYLE_GO), "done",
 			),
 		),
-		mpb.BarExtender(nlBarFiller(mpb.NewBarFiller("╢▌▌░╟", false))),
+		mpb.BarExtender(nlBarFiller(mpb.NewBarFiller("╢▌▌░╟"))),
 	)
 	// simulating some work
 	max := 100 * time.Millisecond
diff --git a/_examples/dynTotal/main.go b/_examples/dynTotal/main.go
index 55e8c0e..a283cf5 100644
--- a/_examples/dynTotal/main.go
+++ b/_examples/dynTotal/main.go
@@ -17,6 +17,7 @@
 	p := mpb.New(mpb.WithWidth(64))
 
 	var total int64
+	// new bar with 'trigger complete event' disabled, because total is zero
 	bar := p.AddBar(total,
 		mpb.PrependDecorators(decor.Counters(decor.UnitKiB, "% .1f / % .1f")),
 		mpb.AppendDecorators(decor.Percentage()),
diff --git a/_examples/io/main.go b/_examples/io/main.go
index 00a6dcd..1a4464b 100644
--- a/_examples/io/main.go
+++ b/_examples/io/main.go
@@ -19,7 +19,8 @@
 		mpb.WithRefreshRate(180*time.Millisecond),
 	)
 
-	bar := p.AddBar(total, mpb.BarStyle("[=>-|"),
+	bar := p.Add(total,
+		mpb.NewBarFiller("[=>-|"),
 		mpb.PrependDecorators(
 			decor.CountersKibiByte("% .2f / % .2f"),
 		),
diff --git a/_examples/reverseBar/main.go b/_examples/reverseBar/main.go
index 2993f50..2ea06c7 100644
--- a/_examples/reverseBar/main.go
+++ b/_examples/reverseBar/main.go
@@ -19,9 +19,9 @@
 
 	for i := 0; i < numBars; i++ {
 		name := fmt.Sprintf("Bar#%d:", i)
-		bar := p.AddBar(int64(total),
+		bar := p.Add(int64(total),
 			// reverse Bar#1
-			mpb.BarOptOn(mpb.BarReverse(), func() bool { return i == 1 }),
+			mpb.NewBarFillerRev("", func() bool { return i == 1 }),
 			mpb.PrependDecorators(
 				// simple name decorator
 				decor.Name(name),
diff --git a/_examples/singleBar/main.go b/_examples/singleBar/main.go
index 5c6029f..ca7ae4d 100644
--- a/_examples/singleBar/main.go
+++ b/_examples/singleBar/main.go
@@ -15,9 +15,9 @@
 	total := 100
 	name := "Single Bar:"
 	// adding a single bar, which will inherit container's width
-	bar := p.AddBar(int64(total),
-		// override DefaultBarStyle, which is "[=>-]<+"
-		mpb.BarStyle("╢▌▌░╟"),
+	bar := p.Add(int64(total),
+		// progress bar filler with customized style
+		mpb.NewBarFiller("╢▌▌░╟"),
 		mpb.PrependDecorators(
 			// display our name with one space on the right
 			decor.Name(name, decor.WC{W: len(name) + 1, C: decor.DidentRight}),
diff --git a/_examples/spinnerBar/main.go b/_examples/spinnerBar/main.go
index fb4d910..4f67b35 100644
--- a/_examples/spinnerBar/main.go
+++ b/_examples/spinnerBar/main.go
@@ -14,18 +14,19 @@
 	var wg sync.WaitGroup
 	p := mpb.New(
 		mpb.WithWaitGroup(&wg),
-		mpb.WithWidth(13),
+		mpb.WithWidth(14),
 	)
 	total, numBars := 101, 3
 	wg.Add(numBars)
+
+	spinnerStyle := []string{"∙∙∙", "●∙∙", "∙●∙", "∙∙●", "∙∙∙"}
 
 	for i := 0; i < numBars; i++ {
 		name := fmt.Sprintf("Bar#%d:", i)
 		var bar *mpb.Bar
 		if i == 0 {
-			bar = p.AddBar(int64(total),
-				// override mpb.DefaultBarStyle, which is "[=>-]<+"
-				mpb.BarStyle("╢▌▌░╟"),
+			bar = p.Add(int64(total),
+				mpb.NewBarFiller("╢▌▌░╟"),
 				mpb.PrependDecorators(
 					// simple name decorator
 					decor.Name(name),
@@ -39,9 +40,8 @@
 				),
 			)
 		} else {
-			bar = p.AddSpinner(int64(total), mpb.SpinnerOnMiddle,
-				// override mpb.DefaultSpinnerStyle
-				mpb.SpinnerStyle([]string{"∙∙∙", "●∙∙", "∙●∙", "∙∙●", "∙∙∙"}),
+			bar = p.Add(int64(total),
+				mpb.NewSpinnerFiller(spinnerStyle, mpb.SpinnerOnMiddle),
 				mpb.PrependDecorators(
 					// simple name decorator
 					decor.Name(name),
diff --git a/_examples/suppressBar/main.go b/_examples/suppressBar/main.go
index f0026e3..9f17a0b 100644
--- a/_examples/suppressBar/main.go
+++ b/_examples/suppressBar/main.go
@@ -42,12 +42,8 @@
 				}
 			})
 		}),
-		mpb.PrependDecorators(
-			decor.Name("my bar:"),
-		),
-		mpb.AppendDecorators(
-			newCustomPercentage(nextCh),
-		),
+		mpb.PrependDecorators(decor.Name("my bar:")),
+		mpb.AppendDecorators(newCustomPercentage(nextCh)),
 	)
 	ew := &errorWrapper{}
 	time.AfterFunc(2*time.Second, func() {