diff --git a/internal/console/input.go b/internal/console/input.go
index 053e283..43ef138 100644
--- a/internal/console/input.go
+++ b/internal/console/input.go
@@ -9,7 +9,7 @@ import (
 type Key int
 
 const (
-	KeyNormal = iota
+	KeyNormal Key = iota
 	KeyUp
 	KeyDown
 	KeyRight
diff --git a/internal/editor/command.go b/internal/editor/command.go
index 019627b..47d47b2 100644
--- a/internal/editor/command.go
+++ b/internal/editor/command.go
@@ -8,9 +8,9 @@ func (ed *Editor) enterInsert() {
 }
 
 func (ed *Editor) enterInsertAfter() {
-	len := ed.runeCount()
-	if ed.col >= len-1 {
-		ed.col = len
+	rc := ed.runeCount()
+	if ed.col >= rc-1 {
+		ed.col = rc
 		ed.head = ed.lines[ed.row]
 		ed.tail = ""
 		ed.mode = modeInsert
diff --git a/internal/editor/editor.go b/internal/editor/editor.go
index b4448c0..9786bee 100644
--- a/internal/editor/editor.go
+++ b/internal/editor/editor.go
@@ -12,7 +12,7 @@ import (
 type mode int
 
 const (
-	modeCommand = iota
+	modeCommand mode = iota
 	modeInsert
 )
 
@@ -27,44 +27,63 @@ type Editor struct {
 	path       string
 }
 
+func (ed *Editor) load() {
+	if ed.path == "" {
+		return
+	}
+	_, err := os.Stat(ed.path)
+	if err != nil { // file not exists
+		return
+	}
+	data, err := ioutil.ReadFile(ed.path)
+	if err != nil {
+		panic(err)
+	}
+	if len(data) < 1 {
+		ed.lines = make([]string, 1)
+	}
+	// TODO CRLF
+	if data[len(data)-1] == '\n' {
+		data = data[:len(data)-1]
+	}
+	ed.lines = strings.Split(string(data), "\n")
+}
+
 func Init(args []string) *Editor {
 	var path string
-	var lines []string
 	if len(args) > 1 {
 		path = args[1]
-		_, err := os.Stat(path)
-		if err == nil { // file exists
-			data, err := ioutil.ReadFile(path)
-			if err != nil {
-				panic(err)
-			}
-			if len(data) > 0 {
-				if data[len(data)-1] == '\n' {
-					data = data[:len(data)-1]
-				}
-				lines = strings.Split(string(data), "\n")
-			}
-		}
-	}
-	if len(lines) < 1 {
-		lines = make([]string, 1)
 	}
 
-	console.Raw()
-
-	return &Editor{
+	ed := &Editor{
 		col:    0,
 		row:    0,
 		x:      0,
 		y:      0,
 		vrow:   0,
-		lines:  lines,
+		lines:  make([]string, 1),
 		head:   "",
 		tail:   "",
 		insert: new(strings.Builder),
 		mode:   modeCommand,
 		path:   path,
 	}
+
+	ed.load()
+
+	console.Raw()
+	return ed
+}
+
+func (ed *Editor) save() {
+	if ed.path == "" {
+		return
+	}
+	text := strings.Join(ed.lines, "\n") + "\n"
+	err := ioutil.WriteFile(ed.path, []byte(text), 0644)
+	if err != nil {
+		panic(err)
+	}
 }
 
 func (ed *Editor) Finish() {
@@ -73,238 +92,14 @@ func (ed *Editor) Finish() {
 	console.Cooked()
 	console.ShowCursor()
 
-	if ed.path != "" {
-		text := strings.Join(ed.lines, "\n") + "\n"
-		err := ioutil.WriteFile(ed.path, []byte(text), 0644)
-		if err != nil {
-			panic(err)
-		}
-	}
+	ed.save()
 }
 
 func (ed *Editor) runeCount() int {
 	return utf8.RuneCountInString(ed.lines[ed.row])
 }
 
-func (ed *Editor) lineHeight(line string) int {
-	w, _ := console.Size()
-	rc := utf8.RuneCountInString(line)
-	width := console.StringWidth(line, rc)
-	return 1 + max(width-1, 0)/w
-}
-
-func (ed *Editor) drawBuffer() {
-	_, h := console.Size()
-
-	y := 0
-	for i := ed.vrow; i < len(ed.lines); i++ {
-		var line string
-		if ed.mode == modeInsert && i == ed.row {
-			line = ed.head + ed.insert.String() + ed.tail
-		} else {
-			line = ed.lines[i]
-		}
-
-		console.MoveCursor(0, y)
-		console.Print(line)
-
-		y += ed.lineHeight(line)
-		if y >= h-1 {
-			break
-		}
-	}
-
-	for ; y < h-1; y++ {
-		console.MoveCursor(0, y)
-		console.Print("~")
-	}
-}
-
-func (ed *Editor) drawStatus() {
-	_, h := console.Size()
-
-	console.MoveCursor(0, h-1)
-	switch ed.mode {
-	case modeCommand:
-		console.Print("c")
-	case modeInsert:
-		console.Print("i")
-	}
-}
-
-func (ed *Editor) updateCursor() {
-	w, h := console.Size()
-
-	var dy int
-	switch ed.mode {
-	case modeCommand:
-		ed.row = min(max(ed.row, 0), max(len(ed.lines)-1, 0))
-		len := ed.runeCount()
-		ed.col = min(ed.col, max(len-1, 0))
-
-		// XXX approximation
-		width := console.StringWidth(ed.lines[ed.row], ed.col)
-		ed.x = width % w
-		dy = width / w
-	case modeInsert:
-		// XXX approximation
-		width := console.StringWidth(ed.head+ed.insert.String(), ed.col)
-		ed.x = width % w
-		dy = width / w
-	}
-
-	if ed.row < ed.vrow {
-		ed.vrow = ed.row
-	}
-
-	y := 0
-	for i := ed.vrow; i < ed.row; i++ {
-		y += ed.lineHeight(ed.lines[i])
-	}
-	ed.y = y + dy
-
-	for ed.y >= h-1 {
-		ed.vrow++
-
-		y := 0
-		for i := ed.vrow; i < ed.row; i++ {
-			y += ed.lineHeight(ed.lines[i])
-		}
-		ed.y = y + dy
-	}
-}
-
-func (ed *Editor) repaint() {
-	console.HideCursor()
-
-	console.Clear()
-	console.HomeCursor()
-
-	ed.updateCursor()
-
-	ed.drawBuffer()
-	ed.drawStatus()
-
-	console.MoveCursor(ed.x, ed.y)
-
-	console.ShowCursor()
-}
-
-func (ed *Editor) exitInsert() {
-	ed.lines[ed.row] = ed.head + ed.insert.String() + ed.tail
-	ed.tail = ""
-	ed.insert.Reset()
-	ed.mode = modeCommand
-	ed.moveLeft(1)
-}
-
-func (ed *Editor) insertNewline() {
-	before := make([]string, 0, len(ed.lines)+1)
-	before = append(before, ed.lines[:ed.row]...)
-	var after []string
-	if ed.row+1 < len(ed.lines) {
-		after = ed.lines[ed.row+1:]
-	} else {
-		after = []string{}
-	}
-	newLines := []string{
-		ed.head + ed.insert.String(),
-		ed.tail,
-	}
-	ed.lines = append(append(before, newLines...), after...)
-
-	ed.row++
-
-	ed.col = 0
-	ed.head = ""
-	ed.insert.Reset()
-}
-
-func (ed *Editor) deleteBefore() {
-	if ed.insert.Len() < 1 {
-		return // TODO ring
-	}
-	insert := ed.insert.String()
-	_, size := utf8.DecodeLastRuneInString(insert)
-	insert = insert[:len(insert)-size]
-	ed.insert.Reset()
-	ed.insert.WriteString(insert)
-	ed.col--
-}
-
 func (ed *Editor) insertRune(r rune) {
 	ed.insert.WriteRune(r)
 	ed.col++
 }
-
-func (ed *Editor) Main() {
-	for {
-		ed.repaint()
-
-		k, r := console.ReadKey()
-		switch ed.mode {
-		case modeCommand:
-			switch k {
-			case console.KeyNormal:
-				switch r {
-				case 'q':
-					return
-				case 'i':
-					ed.enterInsert()
-				case 'a':
-					ed.enterInsertAfter()
-				case 'h':
-					ed.moveLeft(1)
-				case 'l':
-					ed.moveRight(1)
-				case 'j':
-					ed.moveDown(1)
-				case 'k':
-					ed.moveUp(1)
-				case 'x':
-					ed.deleteRune(1)
-				}
-			case console.KeyUp:
-				ed.moveUp(1)
-			case console.KeyDown:
-				ed.moveDown(1)
-			case console.KeyRight:
-				ed.moveRight(1)
-			case console.KeyLeft:
-				ed.moveLeft(1)
-			default:
-				// TODO ring
-			}
-		case modeInsert:
-			switch k {
-			case console.KeyNormal:
-				switch r {
-				case console.RuneEscape:
-					ed.exitInsert()
-				case console.RuneEnter:
-					ed.insertNewline()
-				case console.RuneBackspace:
-					ed.deleteBefore()
-				case console.RuneDelete:
-					ed.deleteBefore()
-				default:
-					ed.insertRune(r)
-				}
-			case console.KeyUp:
-				ed.exitInsert()
-				ed.moveUp(1)
-			case console.KeyDown:
-				ed.exitInsert()
-				ed.moveDown(1)
-			case console.KeyRight:
-				ed.exitInsert()
-				ed.moveRight(1)
-			case console.KeyLeft:
-				ed.exitInsert()
-				ed.moveLeft(1)
-			default:
-				// TODO ring
-			}
-		}
-	}
-}
diff --git a/internal/editor/main.go b/internal/editor/main.go
new file mode 100644
index 0000000..0b5078c
--- /dev/null
+++ b/internal/editor/main.go
@@ -0,0 +1,121 @@
+package editor
+
+import (
+	"unicode/utf8"
+
+	"tea.kareha.org/lab/levi/internal/console"
+)
+
+func (ed *Editor) exitInsert() {
+	ed.lines[ed.row] = ed.head + ed.insert.String() + ed.tail
+	ed.tail = ""
+	ed.insert.Reset()
+	ed.mode = modeCommand
+	ed.moveLeft(1)
+}
+
+func (ed *Editor) insertNewline() {
+	before := make([]string, 0, len(ed.lines)+1)
+	before = append(before, ed.lines[:ed.row]...)
+	var after []string
+	if ed.row+1 < len(ed.lines) {
+		after = ed.lines[ed.row+1:]
+	} else {
+		after = []string{}
+	}
+	newLines := []string{
+		ed.head + ed.insert.String(),
+		ed.tail,
+	}
+	ed.lines = append(append(before, newLines...), after...)
+
+	ed.row++
+
+	ed.col = 0
+	ed.head = ""
+	ed.insert.Reset()
+}
+
+func (ed *Editor) deleteBefore() {
+	if ed.insert.Len() < 1 {
+		return // TODO ring
+	}
+	insert := ed.insert.String()
+	_, size := utf8.DecodeLastRuneInString(insert)
+	insert = insert[:len(insert)-size]
+	ed.insert.Reset()
+	ed.insert.WriteString(insert)
+	ed.col--
+}
+
+func (ed *Editor) Main() {
+	for {
+		ed.repaint()
+
+		k, r := console.ReadKey()
+		switch ed.mode {
+		case modeCommand:
+			switch k {
+			case console.KeyNormal:
+				switch r {
+				case 'q':
+					return
+				case 'i':
+					ed.enterInsert()
+				case 'a':
+					ed.enterInsertAfter()
+				case 'h':
+					ed.moveLeft(1)
+				case 'l':
+					ed.moveRight(1)
+				case 'j':
+					ed.moveDown(1)
+				case 'k':
+					ed.moveUp(1)
+				case 'x':
+					ed.deleteRune(1)
+				}
+			case console.KeyUp:
+				ed.moveUp(1)
+			case console.KeyDown:
+				ed.moveDown(1)
+			case console.KeyRight:
+				ed.moveRight(1)
+			case console.KeyLeft:
+				ed.moveLeft(1)
+			default:
+				// TODO ring
+			}
+		case modeInsert:
+			switch k {
+			case console.KeyNormal:
+				switch r {
+				case console.RuneEscape:
+					ed.exitInsert()
+				case console.RuneEnter:
+					ed.insertNewline()
+				case console.RuneBackspace:
+					ed.deleteBefore()
+				case console.RuneDelete:
+					ed.deleteBefore()
+				default:
+					ed.insertRune(r)
+				}
+			case console.KeyUp:
+				ed.exitInsert()
+				ed.moveUp(1)
+			case console.KeyDown:
+				ed.exitInsert()
+				ed.moveDown(1)
+			case console.KeyRight:
+				ed.exitInsert()
+				ed.moveRight(1)
+			case console.KeyLeft:
+				ed.exitInsert()
+				ed.moveLeft(1)
+			default:
+				// TODO ring
+			}
+		}
+	}
+}
diff --git a/internal/editor/view.go b/internal/editor/view.go
new file mode 100644
index 0000000..f6f7e52
--- /dev/null
+++ b/internal/editor/view.go
@@ -0,0 +1,113 @@
+package editor
+
+import (
+	"unicode/utf8"
+
+	"tea.kareha.org/lab/levi/internal/console"
+)
+
+func (ed *Editor) lineHeight(line string) int {
+	w, _ := console.Size()
+	rc := utf8.RuneCountInString(line)
+	width := console.StringWidth(line, rc)
+	return 1 + max(width-1, 0)/w
+}
+
+func (ed *Editor) drawBuffer() {
+	_, h := console.Size()
+
+	y := 0
+	for i := ed.vrow; i < len(ed.lines); i++ {
+		var line string
+		if ed.mode == modeInsert && i == ed.row {
+			line = ed.head + ed.insert.String() + ed.tail
+		} else {
+			line = ed.lines[i]
+		}
+
+		console.MoveCursor(0, y)
+		console.Print(line)
+
+		y += ed.lineHeight(line)
+		if y >= h-1 {
+			break
+		}
+	}
+
+	for ; y < h-1; y++ {
+		console.MoveCursor(0, y)
+		console.Print("~")
+	}
+}
+
+func (ed *Editor) drawStatus() {
+	var m string
+	switch ed.mode {
+	case modeCommand:
+		m = "c"
+	case modeInsert:
+		m = "i"
+	}
+
+	_, h := console.Size()
+	console.MoveCursor(0, h-1)
+	console.Printf("%s %d,%d %s", m, ed.row, ed.col, ed.path)
+}
+
+func (ed *Editor) updateCursor() {
+	w, h := console.Size()
+
+	var dy int
+	switch ed.mode {
+	case modeCommand:
+		ed.row = min(max(ed.row, 0), max(len(ed.lines)-1, 0))
+		len := ed.runeCount()
+		ed.col = min(ed.col, max(len-1, 0))
+
+		// XXX approximation
+		width := console.StringWidth(ed.lines[ed.row], ed.col)
+		ed.x = width % w
+		dy = width / w
+	case modeInsert:
+		// XXX approximation
+		width := console.StringWidth(ed.head+ed.insert.String(), ed.col)
+		ed.x = width % w
+		dy = width / w
+	}
+
+	if ed.row < ed.vrow {
+		ed.vrow = ed.row
+	}
+
+	y := 0
+	for i := ed.vrow; i < ed.row; i++ {
+		y += ed.lineHeight(ed.lines[i])
+	}
+	ed.y = y + dy
+
+	for ed.y >= h-1 {
+		ed.vrow++
+
+		y := 0
+		for i := ed.vrow; i < ed.row; i++ {
+			y += ed.lineHeight(ed.lines[i])
+		}
+		ed.y = y + dy
+	}
+}
+
+func (ed *Editor) repaint() {
+	console.HideCursor()
+
+	console.Clear()
+	console.HomeCursor()
+
+	ed.updateCursor()
+
+	ed.drawBuffer()
+	ed.drawStatus()
+
+	console.MoveCursor(ed.x, ed.y)
+
+	console.ShowCursor()
+}