diff --git a/doc/bird.sgml b/doc/bird.sgml
index 03b6591f..0b184281 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -249,6 +249,15 @@ protocol rip {
 
 	<tag>router id <m/IPv4 address/</tag> Set BIRD's router ID. It's a world-wide unique identification of your router, usually one of router's IPv4 addresses. Default: in IPv4 version, the lowest IP address of a non-loopback interface. In IPv6 version, this option is mandatory. 
 
+	<tag>bind bgp [address <m/address/] [port <m/port/] [v6only]</tag>
+	This option allows to specify address and port where BGP
+	protocol should listen. It is global option as listening
+	socket is common to all BGP instances. Default is to listen on
+	all addresses (0.0.0.0) and port 179. In IPv6 mode, option
+	<cf/v6only/ can be used to specify that BGP socket should
+	listen to IPv6 connections only. This is needed if you want to
+	run both bird and bird6 on the same port.
+
 	<tag>table <m/name/</tag> Create a new routing table. The default
 	routing table is created implicitly, other routing tables have
 	to be added by this command.
@@ -464,8 +473,16 @@ This argument can be omitted if there exists only a single instance.
 	<tag>enable|disable|restart <m/name/|"<m/pattern/"|all</tag>
 	Enable, disable or restart a given protocol instance, instances matching the <cf><m/pattern/</cf> or <cf/all/ instances.
 
-	<tag>configure ["<m/config file/"]</tag>
-	Reload configuration from a given file.
+	<tag>configure [soft] ["<m/config file/"]</tag>
+	Reload configuration from a given file. BIRD will smoothly
+	switch itself to the new configuration, protocols are
+	reconfigured if possible, restarted otherwise. Changes in
+	filters usualy lead to restart of affected protocols. If
+	<cf/soft> option is used, changes in filters does not cause
+	BIRD to restart affected protocols, therefore already accepted
+	routes (according to old filters) would be still propagated,
+	but new routes would be processed according to the new
+	filters.
 
 	<tag/down/
 	Shut BIRD down.