diff --git a/bar.go b/bar.go
index 2c5ef11..0c3e9e4 100644
--- a/bar.go
+++ b/bar.go
@@ -29,7 +29,7 @@
 	trimLeftCh    chan bool
 	trimRightCh   chan bool
 	refillCh      chan *refill
-	decoratorCh   chan *decorator
+	dCommandCh    chan *dCommandData
 	flushedCh     chan struct{}
 	removeReqCh   chan struct{}
 	completeReqCh chan struct{}
@@ -89,7 +89,7 @@
 		trimLeftCh:    make(chan bool),
 		trimRightCh:   make(chan bool),
 		refillCh:      make(chan *refill),
-		decoratorCh:   make(chan *decorator),
+		dCommandCh:    make(chan *dCommandData),
 		flushedCh:     make(chan struct{}, 1),
 		removeReqCh:   make(chan struct{}),
 		completeReqCh: make(chan struct{}),
@@ -212,7 +212,7 @@
 	if isClosed(b.done) {
 		return b
 	}
-	b.decoratorCh <- &decorator{decPrepend, f}
+	b.dCommandCh <- &dCommandData{dPrepend, f}
 	return b
 }
 
@@ -221,7 +221,7 @@
 	if isClosed(b.done) {
 		return
 	}
-	b.decoratorCh <- &decorator{decPrependZero, nil}
+	b.dCommandCh <- &dCommandData{dPrependZero, nil}
 }
 
 // AppendFunc appends DecoratorFunc
@@ -229,7 +229,7 @@
 	if isClosed(b.done) {
 		return b
 	}
-	b.decoratorCh <- &decorator{decAppend, f}
+	b.dCommandCh <- &dCommandData{dAppend, f}
 	return b
 }
 
@@ -238,7 +238,7 @@
 	if isClosed(b.done) {
 		return
 	}
-	b.decoratorCh <- &decorator{decAppendZero, nil}
+	b.dCommandCh <- &dCommandData{dAppendZero, nil}
 }
 
 // Completed signals to the bar, that process has been completed.
@@ -298,15 +298,15 @@
 			}
 			barState.current = n
 			prevStartTime = blockStartTime
-		case d := <-b.decoratorCh:
-			switch d.kind {
-			case decAppend:
-				barState.appendFuncs = append(barState.appendFuncs, d.f)
-			case decAppendZero:
+		case data := <-b.dCommandCh:
+			switch data.action {
+			case dAppend:
+				barState.appendFuncs = append(barState.appendFuncs, data.f)
+			case dAppendZero:
 				barState.appendFuncs = nil
-			case decPrepend:
-				barState.prependFuncs = append(barState.prependFuncs, d.f)
-			case decPrependZero:
+			case dPrepend:
+				barState.prependFuncs = append(barState.prependFuncs, data.f)
+			case dPrependZero:
 				barState.prependFuncs = nil
 			}
 		case ch := <-b.stateReqCh:
diff --git a/decorators.go b/decorators.go
index e7a31dc..5f006f5 100644
--- a/decorators.go
+++ b/decorators.go
@@ -21,21 +21,21 @@
 	DextraSpace
 )
 
-type decoratorOperation uint
+type decoratorAction uint
 
 const (
-	decAppend decoratorOperation = iota
-	decPrepend
-	decAppendZero
-	decPrependZero
+	dAppend decoratorAction = iota
+	dPrepend
+	dAppendZero
+	dPrependZero
 )
 
 // DecoratorFunc is a function that can be prepended and appended to the progress bar
 type DecoratorFunc func(s *Statistics, myWidth chan<- int, maxWidth <-chan int) string
 
-type decorator struct {
-	kind decoratorOperation
-	f    DecoratorFunc
+type dCommandData struct {
+	action decoratorAction
+	f      DecoratorFunc
 }
 
 // PrependName prepends name argument to the bar.
diff --git a/progress.go b/progress.go
index d74def9..bcdaaf0 100644
--- a/progress.go
+++ b/progress.go
@@ -20,23 +20,12 @@
 type (
 	// BeforeRender is a func, which gets called before render process
 	BeforeRender func([]*Bar)
-	barOpType    uint
-
-	operation struct {
-		kind   barOpType
+	barAction    uint
+
+	bCommandData struct {
+		action barAction
 		bar    *Bar
 		result chan bool
-	}
-
-	indexedBarBuffer struct {
-		index int
-		buf   []byte
-	}
-
-	indexedBar struct {
-		index     int
-		termWidth int
-		bar       *Bar
 	}
 
 	widthSync struct {
@@ -46,8 +35,8 @@
 )
 
 const (
-	barAdd barOpType = iota
-	barRemove
+	bAdd barAction = iota
+	bRemove
 )
 
 const (
@@ -70,7 +59,7 @@
 	width  int
 	format string
 
-	operationCh    chan *operation
+	bCommandCh     chan *bCommandData
 	rrChangeReqCh  chan time.Duration
 	outChangeReqCh chan io.Writer
 	barCountReqCh  chan chan int
@@ -85,7 +74,7 @@
 func New() *Progress {
 	p := &Progress{
 		width:          pwidth,
-		operationCh:    make(chan *operation),
+		bCommandCh:     make(chan *bCommandData),
 		rrChangeReqCh:  make(chan time.Duration),
 		outChangeReqCh: make(chan io.Writer),
 		barCountReqCh:  make(chan chan int),
@@ -165,7 +154,7 @@
 	}
 	result := make(chan bool)
 	bar := newBar(id, total, p.width, p.format, p.wg, p.cancel)
-	p.operationCh <- &operation{barAdd, bar, result}
+	p.bCommandCh <- &bCommandData{bAdd, bar, result}
 	if <-result {
 		p.wg.Add(1)
 	}
@@ -179,7 +168,7 @@
 		panic(ErrCallAfterStop)
 	}
 	result := make(chan bool)
-	p.operationCh <- &operation{barRemove, b, result}
+	p.bCommandCh <- &bCommandData{bRemove, b, result}
 	return <-result
 }
 
@@ -213,7 +202,7 @@
 	if isClosed(p.done) {
 		return
 	}
-	close(p.operationCh)
+	close(p.bCommandCh)
 }
 
 // server monitors underlying channels and renders any progress bars
@@ -245,25 +234,25 @@
 		case w := <-p.outChangeReqCh:
 			cw.Flush()
 			cw = cwriter.New(w)
-		case op, ok := <-p.operationCh:
+		case data, ok := <-p.bCommandCh:
 			if !ok {
 				return
 			}
-			switch op.kind {
-			case barAdd:
-				bars = append(bars, op.bar)
-				op.result <- true
-			case barRemove:
+			switch data.action {
+			case bAdd:
+				bars = append(bars, data.bar)
+				data.result <- true
+			case bRemove:
 				var ok bool
 				for i, b := range bars {
-					if b == op.bar {
+					if b == data.bar {
 						bars = append(bars[:i], bars[i+1:]...)
 						ok = true
 						b.remove()
 						break
 					}
 				}
-				op.result <- ok
+				data.result <- ok
 			}
 		case respCh := <-p.barCountReqCh:
 			respCh <- len(bars)