diff --git a/decor/decorator.go b/decor/decorator.go
index 77086a0..e4fd714 100644
--- a/decor/decorator.go
+++ b/decor/decorator.go
@@ -31,8 +31,12 @@
 	DSyncSpaceR = DSyncWidth | DextraSpace | DidentRight
 )
 
+// TimeStyle enum.
+type TimeStyle int
+
+// TimeStyle kinds.
 const (
-	ET_STYLE_GO = iota
+	ET_STYLE_GO TimeStyle = iota
 	ET_STYLE_HHMMSS
 	ET_STYLE_HHMM
 	ET_STYLE_MMSS
@@ -55,7 +59,7 @@
 }
 
 // Syncable interface.
-// All decorators implement this interface implicitly.  Its Syncable
+// All decorators implement this interface implicitly. Its Syncable
 // method exposes width sync channel, if sync is enabled.
 type Syncable interface {
 	Syncable() (bool, chan int)
diff --git a/decor/elapsed.go b/decor/elapsed.go
index 649d40a..b2e7585 100644
--- a/decor/elapsed.go
+++ b/decor/elapsed.go
@@ -10,7 +10,7 @@
 //	`style` one of [ET_STYLE_GO|ET_STYLE_HHMMSS|ET_STYLE_HHMM|ET_STYLE_MMSS]
 //
 //	`wcc` optional WC config
-func Elapsed(style int, wcc ...WC) Decorator {
+func Elapsed(style TimeStyle, wcc ...WC) Decorator {
 	var wc WC
 	for _, widthConf := range wcc {
 		wc = widthConf
@@ -26,7 +26,7 @@
 
 type elapsedDecorator struct {
 	WC
-	style       int
+	style       TimeStyle
 	startTime   time.Time
 	msg         string
 	completeMsg *string
diff --git a/decor/eta.go b/decor/eta.go
index b4ab6be..e8dc979 100644
--- a/decor/eta.go
+++ b/decor/eta.go
@@ -17,7 +17,7 @@
 //	`age` is the previous N samples to average over.
 //
 //	`wcc` optional WC config
-func EwmaETA(style int, age float64, wcc ...WC) Decorator {
+func EwmaETA(style TimeStyle, age float64, wcc ...WC) Decorator {
 	return MovingAverageETA(style, ewma.NewMovingAverage(age), NopNormalizer(), wcc...)
 }
 
@@ -30,7 +30,7 @@
 //	`normalizer` available implementations are [NopNormalizer|FixedIntervalTimeNormalizer|MaxTolerateTimeNormalizer]
 //
 //	`wcc` optional WC config
-func MovingAverageETA(style int, average MovingAverage, normalizer TimeNormalizer, wcc ...WC) Decorator {
+func MovingAverageETA(style TimeStyle, average MovingAverage, normalizer TimeNormalizer, wcc ...WC) Decorator {
 	var wc WC
 	for _, widthConf := range wcc {
 		wc = widthConf
@@ -47,7 +47,7 @@
 
 type movingAverageETA struct {
 	WC
-	style       int
+	style       TimeStyle
 	average     ewma.MovingAverage
 	completeMsg *string
 	normalizer  TimeNormalizer
@@ -104,7 +104,7 @@
 //	`style` one of [ET_STYLE_GO|ET_STYLE_HHMMSS|ET_STYLE_HHMM|ET_STYLE_MMSS]
 //
 //	`wcc` optional WC config
-func AverageETA(style int, wcc ...WC) Decorator {
+func AverageETA(style TimeStyle, wcc ...WC) Decorator {
 	var wc WC
 	for _, widthConf := range wcc {
 		wc = widthConf
@@ -120,7 +120,7 @@
 
 type averageETA struct {
 	WC
-	style       int
+	style       TimeStyle
 	startTime   time.Time
 	completeMsg *string
 }