diff --git a/src/context/mdb/mdb.go b/src/context/mdb/mdb.go
index 9cfd4c31..3ff097d7 100644
--- a/src/context/mdb/mdb.go
+++ b/src/context/mdb/mdb.go
@@ -1,6 +1,6 @@
-package mdb // {{{
-// }}}
-import ( // {{{
+package mdb
+
+import (
 	"context"
 
 	"database/sql"
@@ -9,14 +9,12 @@ import ( // {{{
 	"fmt"
 )
 
-// }}}
-
 type MDB struct {
 	*sql.DB
 	*ctx.Context
 }
 
-func (mdb *MDB) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server { // {{{
+func (mdb *MDB) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server {
 	c.Caches = map[string]*ctx.Cache{
 		"source": &ctx.Cache{Name: "数据库参数", Value: "", Help: "数据库参数"},
 		"driver": &ctx.Cache{Name: "数据库驱动", Value: "", Help: "数据库驱动"},
@@ -28,56 +26,48 @@ func (mdb *MDB) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server
 	return s
 }
 
-// }}}
-func (mdb *MDB) Begin(m *ctx.Message, arg ...string) ctx.Server { // {{{
+func (mdb *MDB) Begin(m *ctx.Message, arg ...string) ctx.Server {
+	if mdb.Context == Index {
+		Pulse = m
+	}
 	return mdb
 }
 
-// }}}
-func (mdb *MDB) Start(m *ctx.Message, arg ...string) bool { // {{{
+func (mdb *MDB) Start(m *ctx.Message, arg ...string) bool {
 	if len(arg) > 0 {
 		m.Cap("source", arg[0])
 	}
 	if len(arg) > 1 {
 		m.Cap("driver", arg[1])
 	} else {
-		m.Cap("driver", m.Conf("driver"))
+		m.Cap("driver", Pulse.Conf("driver"))
 	}
-
 	if m.Cap("source") == "" || m.Cap("driver") == "" {
 		return false
 	}
 
-	m.Cap("stream", m.Cap("source"))
 	db, e := sql.Open(m.Cap("driver"), m.Cap("source"))
 	m.Assert(e)
 	mdb.DB = db
 
-	m.Log("info", nil, "%d open %s %s", m.Capi("nsource", 1), m.Cap("driver"), m.Cap("source"))
+	m.Log("info", nil, "%d open %s %s", Pulse.Capi("nsource"), m.Cap("driver"), m.Cap("stream", m.Cap("source")))
 	return false
 }
 
-// }}}
-func (mdb *MDB) Close(m *ctx.Message, arg ...string) bool { // {{{
+func (mdb *MDB) Close(m *ctx.Message, arg ...string) bool {
 	switch mdb.Context {
 	case m.Target:
-		if mdb.Context == Index {
-			return false
-		}
-
 		if mdb.DB != nil {
-			m.Log("info", nil, "%d close %s %s", m.Capi("nsource", -1)+1, m.Cap("driver"), m.Cap("source"))
+			m.Log("info", nil, "%d close %s %s", Pulse.Capi("nsource", -1)+1, m.Cap("driver"), m.Cap("source"))
 			mdb.DB.Close()
 			mdb.DB = nil
 		}
 	case m.Source:
 	}
-
 	return true
 }
 
-// }}}
-
+var Pulse *ctx.Message
 var Index = &ctx.Context{Name: "mdb", Help: "数据中心",
 	Caches: map[string]*ctx.Cache{
 		"nsource": &ctx.Cache{Name: "数据源数量", Value: "0", Help: "已打开数据库的数量"},
@@ -86,18 +76,15 @@ var Index = &ctx.Context{Name: "mdb", Help: "数据中心",
 		"driver": &ctx.Config{Name: "数据库驱动(mysql)", Value: "mysql", Help: "数据库驱动"},
 	},
 	Commands: map[string]*ctx.Command{
-		"open": &ctx.Command{Name: "open name help source [driver]", Help: "打开数据库", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			m.Assert(len(arg) > 2, "缺少参数") // {{{
-			m.Master, m.Target = c, c
-			m.Cap("stream", m.Cap("nsource"))
-			m.Start(arg[0], "数据存储", arg[2:]...)
-			return ""
-			// }}}
+		"open": &ctx.Command{Name: "open source [driver]", Help: "打开数据库", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			m.Assert(len(arg) > 0, "缺少参数")
+			m.Start(fmt.Sprintf("db%d", Pulse.Capi("nsource", 1)), "数据存储", arg...)
+			Pulse.Cap("stream", Pulse.Cap("nsource"))
 		}},
 		"exec": &ctx.Command{Name: "exec sql [arg]", Help: "操作数据库",
 			Appends: map[string]string{"LastInsertId": "最后插入元组的标识", "RowsAffected": "修改元组的数量"},
-			Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-				mdb, ok := m.Target.Server.(*MDB) // {{{
+			Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+				mdb, ok := m.Target.Server.(*MDB)
 				m.Assert(ok, "目标模块类型错误")
 				m.Assert(len(arg) > 0, "缺少参数")
 				m.Assert(mdb.DB != nil, "数据库未打开")
@@ -118,11 +105,9 @@ var Index = &ctx.Context{Name: "mdb", Help: "数据中心",
 				m.Add("append", "LastInsertId", fmt.Sprintf("%d", id))
 				m.Add("append", "RowsAffected", fmt.Sprintf("%d", n))
 				m.Log("info", nil, "last(%d) rows(%d)", id, n)
-				return ""
-				// }}}
 			}},
-		"query": &ctx.Command{Name: "query sql [arg]", Help: "执行查询语句", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			mdb, ok := m.Target.Server.(*MDB) // {{{
+		"query": &ctx.Command{Name: "query sql [arg]", Help: "执行查询语句", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			mdb, ok := m.Target.Server.(*MDB)
 			m.Assert(ok, "目标模块类型错误")
 			m.Assert(len(arg) > 0, "缺少参数")
 			m.Assert(mdb.DB != nil, "数据库未打开")
@@ -161,10 +146,15 @@ var Index = &ctx.Context{Name: "mdb", Help: "数据中心",
 			}
 
 			m.Log("info", nil, "rows(%d) cols(%d)", len(m.Meta[m.Meta["append"][0]]), len(m.Meta["append"]))
-			return ""
-			// }}}
 		}},
 	},
+	Index: map[string]*ctx.Context{
+		"void": &ctx.Context{Name: "void",
+			Commands: map[string]*ctx.Command{
+				"open": &ctx.Command{},
+			},
+		},
+	},
 }
 
 func init() {
diff --git a/src/context/nfs/nfs.go b/src/context/nfs/nfs.go
index 02cd72b6..9b2e2201 100644
--- a/src/context/nfs/nfs.go
+++ b/src/context/nfs/nfs.go
@@ -1,6 +1,6 @@
-package nfs // {{{
-// }}}
-import ( // {{{
+package nfs
+
+import (
 	"context"
 
 	"fmt"
@@ -9,69 +9,59 @@ import ( // {{{
 	"strconv"
 )
 
-// }}}
-
 type NFS struct {
 	file *os.File
 	*ctx.Context
 }
 
-func (nfs *NFS) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server { // {{{
-	info, ok := m.Data["info"].(os.FileInfo)
-	m.Assert(ok)
+func (nfs *NFS) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server {
+	file, e := os.OpenFile(arg[0], os.O_RDWR|os.O_CREATE, os.ModePerm)
+	m.Assert(e)
+	info, e := os.Stat(arg[0])
+	m.Assert(e)
 
 	c.Caches = map[string]*ctx.Cache{
 		"name": &ctx.Cache{Name: "name", Value: info.Name(), Help: "文件名"},
-		"mode": &ctx.Cache{Name: "mode", Value: info.Mode().String(), Help: "文件名"},
-		"time": &ctx.Cache{Name: "time", Value: info.ModTime().Format("15:03:04"), Help: "文件名"},
-		"size": &ctx.Cache{Name: "size", Value: fmt.Sprintf("%d", info.Size()), Help: "文件名"},
-		"pos":  &ctx.Cache{Name: "pos", Value: "0", Help: "文件名"},
+		"mode": &ctx.Cache{Name: "mode", Value: info.Mode().String(), Help: "文件权限"},
+		"time": &ctx.Cache{Name: "time", Value: info.ModTime().Format("15:03:04"), Help: "创建时间"},
+		"size": &ctx.Cache{Name: "size", Value: fmt.Sprintf("%d", info.Size()), Help: "文件大小"},
+		"pos":  &ctx.Cache{Name: "pos", Value: "0", Help: "读写位置"},
 	}
 	c.Configs = map[string]*ctx.Config{}
 
 	s := new(NFS)
 	s.Context = c
+	s.file = file
 	return s
 
 }
 
-// }}}
-func (nfs *NFS) Begin(m *ctx.Message, arg ...string) ctx.Server { // {{{
+func (nfs *NFS) Begin(m *ctx.Message, arg ...string) ctx.Server {
 	if nfs.Context == Index {
 		Pulse = m
 	}
 	return nfs
-
 }
 
-// }}}
-func (nfs *NFS) Start(m *ctx.Message, arg ...string) bool { // {{{
-	m.Log("info", nil, "%d open %s", Pulse.Capi("nfile", 1), m.Cap("name"))
+func (nfs *NFS) Start(m *ctx.Message, arg ...string) bool {
+	m.Log("info", nil, "%d open %s", Pulse.Capi("nfile"), m.Cap("name"))
 	m.Cap("stream", m.Cap("name"))
 	return false
 }
 
-// }}}
-func (nfs *NFS) Close(m *ctx.Message, arg ...string) bool { // {{{
+func (nfs *NFS) Close(m *ctx.Message, arg ...string) bool {
 	switch nfs.Context {
 	case m.Target:
-		if nfs.Context == Index {
-			return false
-		}
-
 		if nfs.file != nil {
 			m.Log("info", nil, "%d close %s", Pulse.Capi("nfile", -1)+1, m.Cap("name"))
 			nfs.file.Close()
-			return true
+			nfs.file = nil
 		}
 	case m.Source:
 	}
-
 	return true
 }
 
-// }}}
-
 var Pulse *ctx.Message
 var Index = &ctx.Context{Name: "nfs", Help: "存储中心",
 	Caches: map[string]*ctx.Cache{
@@ -81,22 +71,11 @@ var Index = &ctx.Context{Name: "nfs", Help: "存储中心",
 		"size": &ctx.Config{Name: "size", Value: "1024", Help: "读取文件的默认大小值"},
 	},
 	Commands: map[string]*ctx.Command{
-		"open": &ctx.Command{Name: "open file", Help: "打开文件, file: 文件名", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			file, e := os.OpenFile(arg[0], os.O_RDWR|os.O_CREATE, os.ModePerm) // {{{
-			m.Assert(e)
-			info, e := os.Stat(arg[0])
-			m.Assert(e)
-			m.Put("option", "info", info).Start("file"+m.Cap("nfile"), "打开文件", arg...)
-
-			nfs, ok := m.Target.Server.(*NFS)
-			m.Assert(ok)
-
-			nfs.file = file
-			return ""
-			// }}}
+		"open": &ctx.Command{Name: "open file", Help: "打开文件, file: 文件名", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			m.Start(fmt.Sprintf("file%d", Pulse.Capi("nfile", 1)), "打开文件", arg...)
 		}},
-		"read": &ctx.Command{Name: "read [size [pos]]", Help: "读取文件, size: 读取大小, pos: 读取位置", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			nfs, ok := m.Target.Server.(*NFS) // {{{
+		"read": &ctx.Command{Name: "read [size [pos]]", Help: "读取文件, size: 读取大小, pos: 读取位置", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			nfs, ok := m.Target.Server.(*NFS)
 			m.Assert(ok)
 
 			var e error
@@ -105,45 +84,47 @@ var Index = &ctx.Context{Name: "nfs", Help: "存储中心",
 				n, e = strconv.Atoi(arg[0])
 				m.Assert(e)
 			}
-
-			buf := make([]byte, n)
 			if len(arg) > 1 {
 				m.Cap("pos", arg[1])
 			}
 
+			buf := make([]byte, n)
 			if n, e = nfs.file.ReadAt(buf, int64(m.Capi("pos"))); e != io.EOF {
 				m.Assert(e)
 			}
+			m.Echo(string(buf))
 
 			if m.Capi("pos", n); m.Capi("pos") == m.Capi("size") {
 				m.Cap("pos", "0")
 			}
-
-			return string(buf)
-			// }}}
 		}},
-		"write": &ctx.Command{Name: "write string [pos]", Help: "写入文件, string: 写入内容, pos: 写入位置", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			nfs, ok := m.Target.Server.(*NFS) // {{{
+		"write": &ctx.Command{Name: "write string [pos]", Help: "写入文件, string: 写入内容, pos: 写入位置", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			nfs, ok := m.Target.Server.(*NFS)
 			if m.Assert(ok); len(arg) > 1 {
 				m.Cap("pos", arg[1])
 			}
 
 			if len(arg[0]) == 0 {
-				e := nfs.file.Truncate(0)
-				m.Assert(e)
-				m.Cap("size", "0")
+				m.Assert(nfs.file.Truncate(int64(m.Capi("pos"))))
+				m.Cap("size", m.Cap("pos"))
 				m.Cap("pos", "0")
-				return ""
+			} else {
+				n, e := nfs.file.WriteAt([]byte(arg[0]), int64(m.Capi("pos")))
+				if m.Assert(e) && m.Capi("pos", n) > m.Capi("size") {
+					m.Cap("size", m.Cap("pos"))
+				}
 			}
 
-			n, e := nfs.file.WriteAt([]byte(arg[0]), int64(m.Capi("pos")))
-			if m.Assert(e); m.Capi("pos", n) > m.Capi("size") {
-				m.Cap("size", m.Cap("pos"))
-			}
-			return m.Cap("pos")
-			// }}}
+			m.Echo(m.Cap("pos"))
 		}},
 	},
+	Index: map[string]*ctx.Context{
+		"void": &ctx.Context{Name: "void",
+			Commands: map[string]*ctx.Command{
+				"open": &ctx.Command{},
+			},
+		},
+	},
 }
 
 func init() {
diff --git a/src/context/tcp/tcp.go b/src/context/tcp/tcp.go
index b8162a1d..c6b7d118 100644
--- a/src/context/tcp/tcp.go
+++ b/src/context/tcp/tcp.go
@@ -1,6 +1,6 @@
-package tcp // {{{
-// }}}
-import ( // {{{
+package tcp
+
+import (
 	"context"
 
 	"fmt"
@@ -8,15 +8,13 @@ import ( // {{{
 	"strconv"
 )
 
-// }}}
-
 type TCP struct {
 	net.Conn
 	net.Listener
 	*ctx.Context
 }
 
-func (tcp *TCP) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server { // {{{
+func (tcp *TCP) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server {
 	c.Caches = map[string]*ctx.Cache{
 		"protocol": &ctx.Cache{Name: "protocol(tcp/tcp4/tcp6)", Value: m.Conf("protocol"), Help: "监听地址"},
 		"security": &ctx.Cache{Name: "security(true/false)", Value: m.Conf("security"), Help: "加密通信"},
@@ -27,20 +25,17 @@ func (tcp *TCP) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server
 	s := new(TCP)
 	s.Context = c
 	return s
-
 }
 
-// }}}
-func (tcp *TCP) Begin(m *ctx.Message, arg ...string) ctx.Server { // {{{
-	if m.Target == Index {
+func (tcp *TCP) Begin(m *ctx.Message, arg ...string) ctx.Server {
+	if tcp.Context == Index {
 		Pulse = m
 	}
 
 	return tcp
 }
 
-// }}}
-func (tcp *TCP) Start(m *ctx.Message, arg ...string) bool { // {{{
+func (tcp *TCP) Start(m *ctx.Message, arg ...string) bool {
 	if len(arg) > 1 {
 		m.Cap("address", arg[1])
 	}
@@ -53,92 +48,64 @@ func (tcp *TCP) Start(m *ctx.Message, arg ...string) bool { // {{{
 		c, e := net.Dial(m.Cap("protocol"), m.Cap("address"))
 		m.Assert(e)
 		tcp.Conn = c
-		m.Log("info", nil, "dial(%d) %v->%v", m.Capi("nclient", 1), tcp.LocalAddr(), tcp.RemoteAddr())
-		m.Cap("stream", fmt.Sprintf("%s->%s", tcp.LocalAddr(), tcp.RemoteAddr()))
+		m.Log("info", nil, "%s dial %s", Pulse.Cap("nclient"), m.Cap("stream", fmt.Sprintf("%s->%s", tcp.LocalAddr(), tcp.RemoteAddr())))
 
-		msg := m.Spawn(m.Source).Put("option", "io", c)
+		msg := m.Reply("open").Put("option", "io", c)
 		msg.Cmd("open")
-		msg.Cap("stream", tcp.RemoteAddr().String())
-
-		if tcp.Sessions == nil {
-			tcp.Sessions = make(map[string]*ctx.Message)
-		}
-		tcp.Sessions["open"] = msg
-		msg.Name = "open"
-
-		// m.Reply(c.LocalAddr().String()).Put("option", "io", c).Cmd("open")
+		msg.Cap("stream", tcp.LocalAddr().String())
 		return false
 	case "accept":
 		c, e := m.Data["io"].(net.Conn)
 		m.Assert(e)
 		tcp.Conn = c
-		m.Log("info", nil, "accept(%d) %v<-%v", m.Capi("nclient", 1), tcp.LocalAddr(), tcp.RemoteAddr())
-		m.Cap("stream", fmt.Sprintf("%s<-%s", tcp.LocalAddr(), tcp.RemoteAddr()))
+		m.Log("info", nil, "%s accept %s", Pulse.Cap("nclient"), m.Cap("stream", fmt.Sprintf("%s<-%s", tcp.LocalAddr(), tcp.RemoteAddr())))
 
-		s, e := m.Data["source"].(*ctx.Context)
-		m.Assert(e)
-		msg := m.Spawn(s).Put("option", "io", c)
+		msg := m.Spawn(m.Data["source"].(*ctx.Context), "open").Put("option", "io", c)
 		msg.Cmd("open")
 		msg.Cap("stream", tcp.RemoteAddr().String())
-
-		if tcp.Sessions == nil {
-			tcp.Sessions = make(map[string]*ctx.Message)
-		}
-		tcp.Sessions["open"] = msg
-		msg.Name = "open"
-
-		// m.Reply(c.RemoteAddr().String())
 		return false
 	}
 
 	l, e := net.Listen(m.Cap("protocol"), m.Cap("address"))
 	m.Assert(e)
 	tcp.Listener = l
-	m.Log("info", nil, "listen(%d) %v", m.Capi("nlisten", 1), l.Addr())
-	m.Cap("stream", fmt.Sprintf("%s", l.Addr()))
+	m.Log("info", nil, "%d listen %v", Pulse.Capi("nlisten"), m.Cap("stream", fmt.Sprintf("%s", l.Addr())))
 
 	for {
 		c, e := l.Accept()
 		m.Assert(e)
-		m.Spawn(Index).Put("option", "io", c).Put("option", "source", m.Source).Start(fmt.Sprintf("com%d", m.Capi("nclient", 1)), "网络连接", "accept", c.RemoteAddr().String())
+		m.Spawn(Index).Put("option", "io", c).Put("option", "source", m.Source).Start(fmt.Sprintf("com%d", Pulse.Capi("nclient", 1)), "网络连接", "accept", c.RemoteAddr().String())
 	}
 
 	return true
 }
 
-// }}}
-func (tcp *TCP) Close(m *ctx.Message, arg ...string) bool { // {{{
+func (tcp *TCP) Close(m *ctx.Message, arg ...string) bool {
 	switch tcp.Context {
 	case m.Target:
-		if tcp.Context == Index {
-			return false
-		}
-
 		if tcp.Listener != nil {
-			m.Log("info", nil, "%d close %v", Pulse.Capi("nlisten", -1)+1, tcp.Listener.Addr())
+			m.Log("info", nil, "%d close %v", Pulse.Capi("nlisten", -1)+1, m.Cap("stream"))
 			tcp.Listener.Close()
 			tcp.Listener = nil
 		}
+		if tcp.Conn != nil {
+			m.Log("info", nil, "%d close %v", Pulse.Capi("nclient", -1)+1, m.Cap("stream"))
+			tcp.Conn.Close()
+			tcp.Conn = nil
+		}
 	case m.Source:
 		if tcp.Conn != nil {
 			msg := m.Spawn(tcp.Context)
-			msg.Master = tcp.Context
-			if !tcp.Context.Close(msg, arg...) {
+			if msg.Master = tcp.Context; !tcp.Context.Close(msg, arg...) {
 				return false
 			}
 		}
 	}
 
-	if tcp.Conn != nil {
-		m.Log("info", nil, "%d close %v", Pulse.Capi("nclient", -1)+1, tcp.Conn.LocalAddr())
-		tcp.Conn.Close()
-		tcp.Conn = nil
-	}
 	return true
 }
 
-// }}}
-
+var Pulse *ctx.Message
 var Index = &ctx.Context{Name: "tcp", Help: "网络中心",
 	Caches: map[string]*ctx.Cache{
 		"nlisten": &ctx.Cache{Name: "nlisten", Value: "0", Help: "监听数量"},
@@ -149,53 +116,29 @@ var Index = &ctx.Context{Name: "tcp", Help: "网络中心",
 		"security": &ctx.Config{Name: "security(true/false)", Value: "false", Help: "加密通信"},
 	},
 	Commands: map[string]*ctx.Command{
-		"listen": &ctx.Command{Name: "listen [address [security]]", Help: "监听连接", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			switch len(arg) { // {{{
-			case 0:
-				m.Travel(nil, func(m *ctx.Message) bool {
-					if tcp, ok := m.Target.Server.(*TCP); ok && tcp.Listener != nil {
-						m.Echo("%s %v\n", m.Target.Name, tcp.Addr())
-					}
-					return true
-				})
-			default:
-				m.Start(fmt.Sprintf("pub%d", m.Capi("nlisten")+1), "网络监听", m.Meta["detail"]...)
-			}
-			return ""
-			// }}}
+		"listen": &ctx.Command{Name: "listen address [security]", Help: "监听连接", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			m.Start(fmt.Sprintf("pub%d", Pulse.Capi("nlisten", 1)), "网络监听", m.Meta["detail"]...)
 		}},
-		"dial": &ctx.Command{Name: "dial [address [security]]", Help: "建立连接", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			switch len(arg) { // {{{
-			case 0:
-				m.Travel(nil, func(m *ctx.Message) bool {
-					if tcp, ok := m.Target.Server.(*TCP); ok && tcp.Conn != nil {
-						m.Echo("%s %v<->%v\n", m.Target.Name, tcp.LocalAddr(), tcp.RemoteAddr())
-					}
-					return true
-				})
-			default:
-				m.Start(fmt.Sprintf("com%d", m.Capi("nclient")+1), "网络连接", m.Meta["detail"]...)
-			}
-			return ""
-			// }}}
+		"dial": &ctx.Command{Name: "dial [address [security]]", Help: "建立连接", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			m.Start(fmt.Sprintf("com%d", Pulse.Capi("nclient", 1)), "网络连接", m.Meta["detail"]...)
 		}},
-		"send": &ctx.Command{Name: "send message", Help: "发送消息", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			if tcp, ok := m.Target.Server.(*TCP); ok && tcp.Conn != nil { // {{{
-				tcp.Conn.Write([]byte(arg[0]))
-			}
-			return ""
-			// }}}
+		"send": &ctx.Command{Name: "send message", Help: "发送消息", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			tcp, ok := m.Target.Server.(*TCP)
+			m.Assert(ok && tcp.Conn != nil)
+
+			tcp.Conn.Write([]byte(arg[0]))
+
 		}},
-		"recv": &ctx.Command{Name: "recv size", Help: "接收消息", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
+		"recv": &ctx.Command{Name: "recv size", Help: "接收消息", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			tcp, ok := m.Target.Server.(*TCP)
+			m.Assert(ok && tcp.Conn != nil)
+
 			size, e := strconv.Atoi(arg[0])
 			m.Assert(e)
-			if tcp, ok := m.Target.Server.(*TCP); ok && tcp.Conn != nil { // {{{
-				buf := make([]byte, size)
-				tcp.Conn.Read(buf)
-				return string(buf)
-			}
-			return ""
-			// }}}
+
+			buf := make([]byte, size)
+			tcp.Conn.Read(buf)
+			m.Echo(string(buf))
 		}},
 	},
 	Index: map[string]*ctx.Context{
@@ -208,8 +151,6 @@ var Index = &ctx.Context{Name: "tcp", Help: "网络中心",
 	},
 }
 
-var Pulse *ctx.Message
-
 func init() {
 	tcp := &TCP{}
 	tcp.Context = Index
diff --git a/src/context/web/web.go b/src/context/web/web.go
index e7c6453c..d4fa7171 100644
--- a/src/context/web/web.go
+++ b/src/context/web/web.go
@@ -1,6 +1,6 @@
-package web // {{{
-// }}}
-import ( // {{{
+package web
+
+import (
 	"context"
 
 	"html/template"
@@ -13,12 +13,10 @@ import ( // {{{
 	"strings"
 )
 
-// }}}
-
 type MUX interface {
 	Handle(string, http.Handler)
 	HandleFunc(string, func(http.ResponseWriter, *http.Request))
-	Trans(*ctx.Message, string, func(*ctx.Message, *ctx.Context, string, ...string) string)
+	Trans(*ctx.Message, string, func(*ctx.Message, *ctx.Context, string, ...string))
 }
 
 type WEB struct {
@@ -29,10 +27,9 @@ type WEB struct {
 	*ctx.Context
 }
 
-func (web *WEB) Trans(m *ctx.Message, key string, hand func(*ctx.Message, *ctx.Context, string, ...string) string) { // {{{
+func (web *WEB) Trans(m *ctx.Message, key string, hand func(*ctx.Message, *ctx.Context, string, ...string)) {
 	web.HandleFunc(key, func(w http.ResponseWriter, r *http.Request) {
-		msg := m.Spawn(m.Target)
-		msg.Set("detail", key)
+		msg := m.Spawn(m.Target).Set("detail", key)
 		for k, v := range r.Form {
 			msg.Add("option", k)
 			msg.Meta[k] = v
@@ -44,16 +41,11 @@ func (web *WEB) Trans(m *ctx.Message, key string, hand func(*ctx.Message, *ctx.C
 		msg.Log("cmd", nil, "%s %v", key, msg.Meta["option"])
 		msg.Put("option", "request", r)
 		msg.Put("option", "response", w)
-
-		ret := hand(msg, msg.Target, key)
-		if ret != "" {
-			msg.Echo(ret)
-		}
+		hand(msg, msg.Target, key)
 
 		header := w.Header()
 		for _, k := range msg.Meta["append"] {
-			ce := &http.Cookie{Name: k, Value: msg.Get(k)}
-			header.Add("Set-Cookie", ce.String())
+			header.Add("Set-Cookie", (&http.Cookie{Name: k, Value: msg.Get(k)}).String())
 		}
 		for _, v := range msg.Meta["result"] {
 			w.Write([]byte(v))
@@ -61,12 +53,10 @@ func (web *WEB) Trans(m *ctx.Message, key string, hand func(*ctx.Message, *ctx.C
 	})
 }
 
-// }}}
-func (web *WEB) ServeHTTP(w http.ResponseWriter, r *http.Request) { // {{{
+func (web *WEB) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if web.Message != nil {
 		log.Println()
 		web.Log("cmd", nil, "%v %s %s", r.RemoteAddr, r.Method, r.URL)
-		defer log.Println()
 
 		if web.Cap("logheaders") == "yes" {
 			for k, v := range r.Header {
@@ -75,8 +65,7 @@ func (web *WEB) ServeHTTP(w http.ResponseWriter, r *http.Request) { // {{{
 			log.Println()
 		}
 
-		r.ParseForm()
-		if len(r.PostForm) > 0 {
+		if r.ParseForm(); len(r.PostForm) > 0 {
 			for k, v := range r.PostForm {
 				log.Printf("%s: %s", k, v[0])
 			}
@@ -86,21 +75,16 @@ func (web *WEB) ServeHTTP(w http.ResponseWriter, r *http.Request) { // {{{
 
 	web.ServeMux.ServeHTTP(w, r)
 
-	if web.Message != nil {
-		if web.Cap("logheaders") == "yes" {
-			for k, v := range w.Header() {
-				log.Println(k+":", v[0])
-			}
+	if web.Message != nil && web.Cap("logheaders") == "yes" {
+		for k, v := range w.Header() {
+			log.Println(k+":", v[0])
 		}
+		log.Println()
 	}
 }
 
-// }}}
-
-func (web *WEB) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server { // {{{
-	c.Caches = map[string]*ctx.Cache{
-		"directory": &ctx.Cache{Name: "directory", Value: "usr", Help: "服务目录"},
-	}
+func (web *WEB) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server {
+	c.Caches = map[string]*ctx.Cache{}
 	c.Configs = map[string]*ctx.Config{}
 
 	s := new(WEB)
@@ -108,15 +92,14 @@ func (web *WEB) Spawn(m *ctx.Message, c *ctx.Context, arg ...string) ctx.Server
 	return s
 }
 
-// }}}
-func (web *WEB) Begin(m *ctx.Message, arg ...string) ctx.Server { // {{{
-	if len(arg) > 0 {
-		m.Cap("directory", arg[0])
-	}
-
+func (web *WEB) Begin(m *ctx.Message, arg ...string) ctx.Server {
+	web.Caches["directory"] = &ctx.Cache{Name: "directory", Value: "usr", Help: "服务目录"}
 	web.Caches["route"] = &ctx.Cache{Name: "route", Value: "/" + web.Context.Name + "/", Help: "请求路径"}
 	web.Caches["register"] = &ctx.Cache{Name: "已初始化(yes/no)", Value: "no", Help: "模块是否已注册"}
 	web.Caches["master"] = &ctx.Cache{Name: "master(yes/no)", Value: "no", Help: "日志输出请求头"}
+	if len(arg) > 0 {
+		m.Cap("directory", arg[0])
+	}
 
 	web.ServeMux = http.NewServeMux()
 	if mux, ok := m.Target.Server.(MUX); ok {
@@ -130,8 +113,7 @@ func (web *WEB) Begin(m *ctx.Message, arg ...string) ctx.Server { // {{{
 	return web
 }
 
-// }}}
-func (web *WEB) Start(m *ctx.Message, arg ...string) bool { // {{{
+func (web *WEB) Start(m *ctx.Message, arg ...string) bool {
 	if len(arg) > 0 {
 		m.Cap("directory", arg[0])
 	}
@@ -192,32 +174,23 @@ func (web *WEB) Start(m *ctx.Message, arg ...string) bool { // {{{
 	return true
 }
 
-// }}}
-func (web *WEB) Close(m *ctx.Message, arg ...string) bool { // {{{
+func (web *WEB) Close(m *ctx.Message, arg ...string) bool {
 	switch web.Context {
 	case m.Target:
 	case m.Source:
 	}
-
 	return true
 }
 
-// }}}
-
 var Index = &ctx.Context{Name: "web", Help: "应用中心",
-	Caches: map[string]*ctx.Cache{
-		"directory": &ctx.Cache{Name: "directory", Value: "usr", Help: "服务目录"},
-	},
+	Caches:  map[string]*ctx.Cache{},
 	Configs: map[string]*ctx.Config{},
 	Commands: map[string]*ctx.Command{
-		"listen": &ctx.Command{Name: "listen [directory [address [protocol]]]", Help: "开启网页服务", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			m.Meta["detail"] = arg // {{{
-			m.Target.Start(m)
-			return ""
-			// }}}
+		"listen": &ctx.Command{Name: "listen [directory [address [protocol]]]", Help: "开启网页服务", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			m.Set("detail", arg...).Target.Start(m)
 		}},
-		"route": &ctx.Command{Name: "route [directory|template|script] route string", Help: "添加响应", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
-			mux, ok := m.Target.Server.(MUX) // {{{
+		"route": &ctx.Command{Name: "route [directory|template|script] route string", Help: "添加响应", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
+			mux, ok := m.Target.Server.(MUX)
 			m.Assert(ok, "模块类型错误")
 			m.Assert(len(arg) == 3, "缺少参数")
 
@@ -225,7 +198,7 @@ var Index = &ctx.Context{Name: "web", Help: "应用中心",
 			case "directory":
 				mux.Handle(arg[1], http.FileServer(http.Dir(arg[2])))
 			case "template":
-				mux.Trans(m, arg[1], func(m *ctx.Message, c *ctx.Context, key string, a ...string) string { // {{{
+				mux.Trans(m, arg[1], func(m *ctx.Message, c *ctx.Context, key string, a ...string) {
 					w := m.Data["response"].(http.ResponseWriter)
 
 					if _, e := os.Stat(arg[2]); e == nil {
@@ -234,16 +207,13 @@ var Index = &ctx.Context{Name: "web", Help: "应用中心",
 						template.Must(template.New("temp").Parse(arg[2])).Execute(w, m)
 					}
 
-					return ""
 				})
-				// }}}
 			case "script":
-				cli := m.Find("cli", true) // {{{
+				cli := m.Find("cli", true)
 				lex := m.Find("lex", true)
-				mux.Trans(m, arg[1], func(m *ctx.Message, c *ctx.Context, key string, a ...string) string {
+				mux.Trans(m, arg[1], func(m *ctx.Message, c *ctx.Context, key string, a ...string) {
 					f, e := os.Open(arg[2])
 					line, bio := "", bufio.NewReader(f)
-
 					if e != nil {
 						line = arg[2]
 					}
@@ -260,18 +230,12 @@ var Index = &ctx.Context{Name: "web", Help: "应用中心",
 							break
 						}
 					}
-
-					return ""
 				})
-				// }}}
 			}
-
-			return ""
-			// }}}
 		}},
-		"/hi": &ctx.Command{Name: "/hi", Help: "添加响应", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) string {
+		"/hi": &ctx.Command{Name: "/hi", Help: "添加响应", Hand: func(m *ctx.Message, c *ctx.Context, key string, arg ...string) {
 			m.Add("append", "hi", "hello")
-			return "hello"
+			m.Echo("hello\n")
 		}},
 	},
 }