diff --git a/exp/term/ansi/osc.go b/exp/term/ansi/osc.go
index daa732c4..40b543c2 100644
--- a/exp/term/ansi/osc.go
+++ b/exp/term/ansi/osc.go
@@ -2,7 +2,6 @@ package ansi
 
 import (
 	"bytes"
-	"strconv"
 	"strings"
 )
 
@@ -64,8 +63,6 @@ func (s OscSequence) Bytes() []byte {
 func (s OscSequence) buffer() *bytes.Buffer {
 	var b bytes.Buffer
 	b.WriteString("\x1b]")
-	b.WriteString(strconv.Itoa(s.Cmd))
-	b.WriteByte(';')
 	b.Write(s.Data)
 	b.WriteByte(BEL)
 	return &b
diff --git a/exp/term/ansi/osc_test.go b/exp/term/ansi/osc_test.go
index debabc8c..a0c58657 100644
--- a/exp/term/ansi/osc_test.go
+++ b/exp/term/ansi/osc_test.go
@@ -11,7 +11,8 @@ func TestOscSequence_String(t *testing.T) {
 		{
 			name: "empty",
 			s: OscSequence{
-				Cmd: 0,
+				Cmd:  0,
+				Data: []byte("0;"),
 			},
 			want: "\x1b]0;\a",
 		},
@@ -19,15 +20,7 @@ func TestOscSequence_String(t *testing.T) {
 			name: "with data",
 			s: OscSequence{
 				Cmd:  1,
-				Data: []byte("hello"),
-			},
-			want: "\x1b]1;hello\x07",
-		},
-		{
-			name: "with data and command",
-			s: OscSequence{
-				Cmd:  1,
-				Data: []byte("hello"),
+				Data: []byte("1;hello"),
 			},
 			want: "\x1b]1;hello\x07",
 		},
diff --git a/exp/term/ansi/parser.go b/exp/term/ansi/parser.go
index baa188f2..f40278ee 100644
--- a/exp/term/ansi/parser.go
+++ b/exp/term/ansi/parser.go
@@ -332,11 +332,11 @@ func (p *Parser) performAction(dispatcher ParserDispatcher, action parser.Action
 		case parser.OscStringState:
 			seq = OscSequence{Cmd: p.Cmd, Data: data}
 		case parser.SosStringState:
-			seq = SosSequence(data)
+			seq = SosSequence{Data: data}
 		case parser.PmStringState:
-			seq = PmSequence(data)
+			seq = PmSequence{Data: data}
 		case parser.ApcStringState:
-			seq = ApcSequence(data)
+			seq = ApcSequence{Data: data}
 		}
 
 		dispatcher(seq)
diff --git a/exp/term/ansi/parser_apc_test.go b/exp/term/ansi/parser_apc_test.go
index 32815654..7c715e86 100644
--- a/exp/term/ansi/parser_apc_test.go
+++ b/exp/term/ansi/parser_apc_test.go
@@ -10,7 +10,7 @@ func TestSosPmApcSequence(t *testing.T) {
 			name:  "apc7",
 			input: "\x1b_Gf=24,s=10,v=20,o=z;aGVsbG8gd29ybGQ=\x1b\\",
 			expected: []Sequence{
-				ApcSequence("Gf=24,s=10,v=20,o=z;aGVsbG8gd29ybGQ="),
+				ApcSequence{Data: []byte("Gf=24,s=10,v=20,o=z;aGVsbG8gd29ybGQ=")},
 				EscSequence('\\'),
 			},
 		},
diff --git a/exp/term/ansi/sequence.go b/exp/term/ansi/sequence.go
index ca4bd772..86bbc356 100644
--- a/exp/term/ansi/sequence.go
+++ b/exp/term/ansi/sequence.go
@@ -101,13 +101,16 @@ func (e EscSequence) Intermediate() int {
 }
 
 // SosSequence represents a SOS sequence.
-type SosSequence []byte
+type SosSequence struct {
+	// Data contains the raw data of the sequence.
+	Data []byte
+}
 
-var _ Sequence = SosSequence(nil)
+var _ Sequence = &SosSequence{}
 
 // Clone implements Sequence.
 func (s SosSequence) Clone() Sequence {
-	return append(SosSequence(nil), s...)
+	return SosSequence{Data: append([]byte(nil), s.Data...)}
 }
 
 // Bytes implements Sequence.
@@ -124,64 +127,73 @@ func (s SosSequence) buffer() *bytes.Buffer {
 	var b bytes.Buffer
 	b.WriteByte('\x1b')
 	b.WriteByte('X')
-	b.Write([]byte(s))
+	b.Write(s.Data)
+	b.WriteString("\x1b\\")
 	return &b
 }
 
 // PmSequence represents a PM sequence.
-type PmSequence []byte
+type PmSequence struct {
+	// Data contains the raw data of the sequence.
+	Data []byte
+}
 
-var _ Sequence = PmSequence(nil)
+var _ Sequence = &PmSequence{}
 
 // Clone implements Sequence.
-func (p PmSequence) Clone() Sequence {
-	return append(PmSequence(nil), p...)
+func (s PmSequence) Clone() Sequence {
+	return PmSequence{Data: append([]byte(nil), s.Data...)}
 }
 
 // Bytes implements Sequence.
-func (p PmSequence) Bytes() []byte {
-	return p.buffer().Bytes()
+func (s PmSequence) Bytes() []byte {
+	return s.buffer().Bytes()
 }
 
 // String implements Sequence.
-func (p PmSequence) String() string {
-	return p.buffer().String()
+func (s PmSequence) String() string {
+	return s.buffer().String()
 }
 
 // buffer returns the buffer of the PM sequence.
-func (p PmSequence) buffer() *bytes.Buffer {
+func (s PmSequence) buffer() *bytes.Buffer {
 	var b bytes.Buffer
 	b.WriteByte('\x1b')
 	b.WriteByte('^')
-	b.Write([]byte(p))
+	b.Write(s.Data)
+	b.WriteString("\x1b\\")
 	return &b
 }
 
 // ApcSequence represents an APC sequence.
-type ApcSequence []byte
+type ApcSequence struct {
+	// Data contains the raw data of the sequence.
+	Data []byte
+}
 
-var _ Sequence = ApcSequence(nil)
+var _ Sequence = &ApcSequence{}
 
 // Clone implements Sequence.
-func (a ApcSequence) Clone() Sequence {
-	return append(ApcSequence(nil), a...)
+func (s ApcSequence) Clone() Sequence {
+	return ApcSequence{Data: append([]byte(nil), s.Data...)}
 }
 
 // Bytes implements Sequence.
-func (a ApcSequence) Bytes() []byte {
-	return a.buffer().Bytes()
+func (s ApcSequence) Bytes() []byte {
+	return s.buffer().Bytes()
 }
 
 // String implements Sequence.
-func (a ApcSequence) String() string {
-	return a.buffer().String()
+func (s ApcSequence) String() string {
+	return s.buffer().String()
 }
 
 // buffer returns the buffer of the APC sequence.
-func (a ApcSequence) buffer() *bytes.Buffer {
+func (s ApcSequence) buffer() *bytes.Buffer {
 	var b bytes.Buffer
 	b.WriteByte('\x1b')
 	b.WriteByte('_')
-	b.Write([]byte(a))
+	b.Write(s.Data)
+	b.WriteString("\x1b\\")
 	return &b
 }
diff --git a/exp/term/examples/parserlog/main.go b/exp/term/examples/parserlog/main.go
index 0f611fa4..5b39665d 100644
--- a/exp/term/examples/parserlog/main.go
+++ b/exp/term/examples/parserlog/main.go
@@ -84,11 +84,11 @@ func main() {
 			}
 			fmt.Printf("Data=%q\n", s.Data)
 		case ansi.SosSequence:
-			fmt.Printf("[SosSequence] Data=%q\n", []byte(s))
+			fmt.Printf("[SosSequence] Data=%q\n", s.Data)
 		case ansi.PmSequence:
-			fmt.Printf("[PmSequence] Data=%q\n", []byte(s))
+			fmt.Printf("[PmSequence] Data=%q\n", s.Data)
 		case ansi.ApcSequence:
-			fmt.Printf("[ApcSequence] Data=%q\n", []byte(s))
+			fmt.Printf("[ApcSequence] Data=%q\n", s.Data)
 		}
 	}