diff --git a/bar.go b/bar.go
index a53aa61..d20524b 100644
--- a/bar.go
+++ b/bar.go
@@ -33,7 +33,7 @@
 	index    int
 
 	// pointer to running bar, which this bar should replace
-	waitBar *Bar
+	runningBar *Bar
 
 	// completed is set from master Progress goroutine only
 	completed bool
@@ -77,7 +77,7 @@
 		// following options are assigned to the *Bar
 		priority         int
 		removeOnComplete bool
-		waitBar          *Bar
+		runningBar       *Bar
 	}
 	refill struct {
 		char rune
@@ -115,14 +115,14 @@
 	b := &Bar{
 		priority:         s.priority,
 		removeOnComplete: s.removeOnComplete,
-		waitBar:          s.waitBar,
+		runningBar:       s.runningBar,
 		operateState:     make(chan func(*bState)),
 		done:             make(chan struct{}),
 		shutdown:         make(chan struct{}),
 	}
 
-	if b.waitBar != nil {
-		b.priority = b.waitBar.priority
+	if b.runningBar != nil {
+		b.priority = b.runningBar.priority
 	}
 
 	go b.serve(wg, s, cancel)
diff --git a/bar_option.go b/bar_option.go
index fb62f29..d097c78 100644
--- a/bar_option.go
+++ b/bar_option.go
@@ -84,19 +84,11 @@
 	}
 }
 
-// BarPriority sets bar's priority.
-// Zero is highest priority, i.e. bar will be on top.
-// If `BarReplaceOnComplete` option is supplied, this option is ignored.
-func BarPriority(priority int) BarOption {
+// BarReplaceOnComplete is indicator for delayed bar start, after the `runningBar` is complete.
+// To achive bar replacement effect, `runningBar` should has its `BarRemoveOnComplete` option set.
+func BarReplaceOnComplete(runningBar *Bar) BarOption {
 	return func(s *bState) {
-		s.priority = priority
-	}
-}
-
-// BarReplaceOnComplete provided `b` is usually already running bar which this bar should replace.
-func BarReplaceOnComplete(b *Bar) BarOption {
-	return func(s *bState) {
-		s.waitBar = b
+		s.runningBar = runningBar
 	}
 }
 
@@ -104,6 +96,15 @@
 func BarClearOnComplete() BarOption {
 	return func(s *bState) {
 		s.noBarOnComplete = true
+	}
+}
+
+// BarPriority sets bar's priority.
+// Zero is highest priority, i.e. bar will be on top.
+// If `BarReplaceOnComplete` option is supplied, this option is ignored.
+func BarPriority(priority int) BarOption {
+	return func(s *bState) {
+		s.priority = priority
 	}
 }
 
diff --git a/decor/decorators.go b/decor/decorators.go
index 8ada6cc..49948e8 100644
--- a/decor/decorators.go
+++ b/decor/decorators.go
@@ -119,7 +119,7 @@
 // counters unit is multiple by 1000.
 // `pairFormat` must contain two printf compatible verbs, like "%f" or "%d".
 // First verb substituted with Current, second one with Total.
-// Example: `"%.1f / %.1f" = "1.0MiB / 12.0MiB"` or `"% .1f / % .1f" = "1.0 MiB / 12.0 MiB"`.
+// Example: `"%.1f / %.1f" = "1.0MB / 12.0MB"` or `"% .1f / % .1f" = "1.0 MB / 12.0 MB"`.
 // If you set `DwidthSync` bit in `conf` param, `minWidth` param is ignored.
 // `DwidthSync` is effective with multiple bars only, if set decorator will participate
 // in width synchronization process with other decorators in the same column group.
diff --git a/progress.go b/progress.go
index bc2c012..f1d3106 100644
--- a/progress.go
+++ b/progress.go
@@ -94,8 +94,8 @@
 	case p.operateState <- func(s *pState) {
 		options = append(options, barWidth(s.width), barFormat(s.format))
 		b := newBar(p.wg, s.idCounter, total, s.cancel, options...)
-		if b.waitBar != nil {
-			s.waitBars[b.waitBar] = b
+		if b.runningBar != nil {
+			s.waitBars[b.runningBar] = b
 		} else {
 			heap.Push(s.bHeap, b)
 			s.heapUpdated = true