diff --git a/core/chat/chat.go b/core/chat/chat.go
index d9de4f70..765508a7 100644
--- a/core/chat/chat.go
+++ b/core/chat/chat.go
@@ -14,7 +14,7 @@ func init() {
 	web.Index.Register(Index, &web.Frame{},
 		HEADER, FOOTER,
 		IFRAME, FAVOR,
-		MESSAGE,
+		MESSAGE, TUTOR,
 	)
 }
 
diff --git a/core/chat/macos/desktop.js b/core/chat/macos/desktop.js
index bfdbdd76..5940081e 100644
--- a/core/chat/macos/desktop.js
+++ b/core/chat/macos/desktop.js
@@ -72,12 +72,8 @@ Volcanos(chat.ONIMPORT, {
 		}); can.page.style(can, carte._target, html.TOP, event.y) },
 	}) }) },
 	_window: function(can, item, cb) { if (!item.index) { return }
-		item.height = can.ConfHeight()-125, item.width = can.ConfWidth()-200, item.left = (can.ConfWidth()-item.width)/2, item.top = 25
-		if (can.ConfWidth() > 1400) { item.width = can.base.Min(can.ConfWidth()-600, 640, 1400), item.left = (can.ConfWidth()-item.width)/2 }
-		if (can.ConfWidth() < 1000) { item.width = can.ConfWidth(), item.left = 0 }
-		if (can.ConfHeight() > 800) { item.height = can.base.Min(can.ConfHeight()-200, 320, 800), item.top = 50 }
-		if (can.user.isMobile) { item.height = can.ConfHeight()-125, item.top = 25, item.width = can.ConfWidth(), item.left = 0 }
-		item.height = can.base.Max(html.DESKTOP_HEIGHT, item.height), item.width = can.base.Max(html.DESKTOP_WIDTH, item.width)
+		item.height = can.base.Max(html.DESKTOP_HEIGHT, can.ConfHeight()-125), item.width = can.base.Max(html.DESKTOP_WIDTH, can.ConfWidth())
+		item.left = (can.ConfWidth()-item.width)/2, item.top = (can.ConfHeight()-item.height-125)/4+25
 		item.type = html.PLUGIN, item.style = {left: item.left, top: item.top, height: item.height, width: item.width}
 		can.onappend.plugin(can, item, function(sub) { can.onappend.style(can, html.FLOAT, sub._target), can.ondetail.select(can, sub._target)
 			can.page.style(can, sub._target, html.HEIGHT, item.height, html.WIDTH, item.width)
diff --git a/core/chat/tutor.go b/core/chat/tutor.go
new file mode 100644
index 00000000..6af5ae1e
--- /dev/null
+++ b/core/chat/tutor.go
@@ -0,0 +1,24 @@
+package chat
+
+import (
+	ice "shylinux.com/x/icebergs"
+	"shylinux.com/x/icebergs/base/cli"
+	"shylinux.com/x/icebergs/base/mdb"
+)
+
+const TUTOR = "tutor"
+
+func init() {
+	Index.MergeCommands(ice.Commands{
+		TUTOR: {Name: "tutor zone id auto", Help: "向导", Actions: mdb.ZoneAction(
+			mdb.SHORT, "zone", mdb.FIELD, "time,zone", mdb.FIELDS, "time,id,type,name,text",
+		), Hand: func(m *ice.Message, arg ...string) {
+			if mdb.ZoneSelect(m, arg...); len(arg) == 0 {
+				m.Push(mdb.TIME, m.Time()).Push(mdb.ZONE, "_current")
+			} else {
+				m.Action(cli.PLAY)
+			}
+			m.Display("")
+		}},
+	})
+}
diff --git a/core/chat/tutor.js b/core/chat/tutor.js
new file mode 100644
index 00000000..7eb3054d
--- /dev/null
+++ b/core/chat/tutor.js
@@ -0,0 +1,42 @@
+Volcanos(chat.ONIMPORT, {
+	_init: function(can, msg) {
+		if (can.Option(mdb.ZONE) == "_current") {
+			can._root.Footer.db.tutor.Table(function(value) { msg.Push(value) }), msg.PushAction("show")
+		}
+		msg.Dump(can)
+	},
+})
+Volcanos(chat.ONACTION, {
+	play: function(can) {
+		can.core.Next(can._msg.Table(), function(value, next, index) {
+			can.onaction.show(can, value.type, value.text), can.onmotion.delay(can, next, 3000)
+			can.onmotion.select(can, can.page.SelectOne(can, can._output, "tbody"), html.TR, index)
+		}, function() {
+			can.user.toastSuccess(can, "play done")
+		})
+	},
+	show: function(can, type, text) {
+		switch (type) {
+			case "storm": var ls = text.split(",")
+				can._root.River.onaction.action({}, can._root.River, ls[0], ls[1])
+				break
+			case "theme":
+				can._root.Header.onimport.theme(can._root.Header, text, {})
+				break
+			case "remove":
+				can.page.Select(can, document.body, text, function(target) {
+					can.page.Remove(can, target)
+				})
+				break
+			case "click":
+				can.page.Select(can, document.body, text, function(target) {
+					target.click()
+					can.page.ClassList.add(can, target, "picker")
+					can.onmotion.delay(can, function() {
+						can.page.ClassList.del(can, target, "picker")
+					}, 3000)
+				})
+				break
+		}
+	},
+})
\ No newline at end of file