diff --git a/bot.go b/bot.go
index b7d3c14..63d2dc1 100644
--- a/bot.go
+++ b/bot.go
@@ -33,7 +33,9 @@ func BotHandlers(b *tb.Bot) {
 
 	b.Handle("/g_stock", botGStock)
 
-	b.Handle("/msg_export_all", botMsgExportAll)
+	b.Handle("/msg_export", botMsgExport)
+
+	b.Handle("/help", botHelp)
 
 	b.Handle(tb.OnPhoto, botPhoto)
 	b.Handle(tb.OnChannelPost, botChannelPost)
@@ -83,6 +85,28 @@ func botText(m *tb.Message) {
 	// captured by existing handlers
 }
 
+func botHelp(m *tb.Message) {
+	if !m.Private() {
+		return
+	}
+	c := TGCommand{
+		Type: commandReplyMsg,
+		Text: `/help - this help\n` +
+			`/msg_rescan <id> - rescan one message\n` +
+			`/msg_rescan_all - rescan all messages\n` +
+			`/parse_rules - list parsing rules\n` +
+			`/parse_rule <id> - detail for one rule\n` +
+			`/timer <ETA> "msg" - schedule msg for client in ETA\n` +
+			`/g_stock - check guild's vault\n` +
+			`/msg_export - export message database\n` +
+			`/msg_load - import message database`,
+		FromMsgID64:  int64(m.ID),
+		FromChatID64: m.Chat.ID,
+	}
+	TGCmdQueue <- c
+	return
+}
+
 func botTest(m *tb.Message) {
 	if !m.Private() {
 		return
@@ -182,7 +206,7 @@ func botMsgRescanAll(m *tb.Message) {
 	return
 }
 
-func botMsgExportAll(m *tb.Message) {
+func botMsgExport(m *tb.Message) {
 	if !m.Private() {
 		return
 	}
@@ -223,6 +247,7 @@ func botMsgExportAll(m *tb.Message) {
 	d.File = tb.FromReader(bytes.NewReader(b))
 	d.FileName = fmt.Sprintf("%s.backup.zip", time.Now().Format("20060102150405"))
 	d.Caption = d.FileName
+	d.MIME = `application/zip`
 
 	c = TGCommand{
 		Type:       commandSendDocument,
@@ -234,6 +259,13 @@ func botMsgExportAll(m *tb.Message) {
 	return
 }
 
+func botMsgLoad(m *tb.Message) {
+	if !m.Private() {
+		return
+	}
+	return
+}
+
 func botMsgDump(m *tb.Message) {
 	var res string
 	r := regexp.MustCompile("^[0-9]+$")
diff --git a/obj.go b/obj.go
index dbbfce5..3c4a871 100644
--- a/obj.go
+++ b/obj.go
@@ -10,10 +10,11 @@ import (
 )
 
 var (
-	cacheObjCastle *sync.Map
-	cacheObjGuild  *sync.Map
-	cacheObjUser   *sync.Map
-	cacheObjItem   *sync.Map
+	cacheObjCastle  *sync.Map
+	cacheObjGuild   *sync.Map
+	cacheObjUser    *sync.Map
+	cacheObjItem    *sync.Map
+	cacheOjbMessage *sync.Map
 )
 
 func getObjTypeId(objId int64) (int64, error) {