diff --git a/v2alpha/cmd/goupnp2srvgen/main.go b/v2alpha/cmd/goupnp2srvgen/main.go
index 12d0750..ce69770 100644
--- a/v2alpha/cmd/goupnp2srvgen/main.go
+++ b/v2alpha/cmd/goupnp2srvgen/main.go
@@ -211,6 +211,9 @@ type ServiceManifest struct {
 	ServiceType string `toml:"type"`
 	// Path within the DCP spec ZIP file e.g. "xml data files/service/Foo1.xml".
 	Path string `toml:"path"`
+
+	// DocumentURL is the URL to the documentation for the service.
+	DocumentURL string `toml:"document_url"`
 }
 
 type tmplArgs struct {
diff --git a/v2alpha/srv/inetgw2/lanhostcfgmgmt1/lanhostcfgmgmt1.go b/v2alpha/srv/inetgw2/lanhostcfgmgmt1/lanhostcfgmgmt1.go
index a902ffc..94b61c4 100755
--- a/v2alpha/srv/inetgw2/lanhostcfgmgmt1/lanhostcfgmgmt1.go
+++ b/v2alpha/srv/inetgw2/lanhostcfgmgmt1/lanhostcfgmgmt1.go
@@ -1,4 +1,6 @@
 // Package lanhostcfgmgmt1 provides types for the "urn:schemas-upnp-org:service:LANHostConfigManagement:1" service.
+//
+// Documented at https://openconnectivity.org/wp-content/uploads/2015/11/UPnP-gw-LANHostConfigManagement-v1-Service.pdf.
 package lanhostcfgmgmt1
 
 import (
diff --git a/v2alpha/srv/inetgw2/wanpppconn1/wanpppconn1.go b/v2alpha/srv/inetgw2/wanpppconn1/wanpppconn1.go
index beecb15..b134f3b 100644
--- a/v2alpha/srv/inetgw2/wanpppconn1/wanpppconn1.go
+++ b/v2alpha/srv/inetgw2/wanpppconn1/wanpppconn1.go
@@ -1,4 +1,6 @@
 // Package wanpppconn1 provides types for the "urn:schemas-upnp-org:service:WANPPPConnection:1" service.
+//
+// Documented at https://openconnectivity.org/wp-content/uploads/2015/11/UPnP_IGD_WANPPPConnection-1.0.pdf.
 package wanpppconn1
 
 import (
diff --git a/v2alpha/srv/srv.gotemplate b/v2alpha/srv/srv.gotemplate
index 6c1fd37..73c307d 100644
--- a/v2alpha/srv/srv.gotemplate
+++ b/v2alpha/srv/srv.gotemplate
@@ -1,6 +1,10 @@
 {{define "service"}}
 {{- $Imps := .Imps -}}
 // Package {{.Manifest.Package}} provides types for the {{quote .Manifest.ServiceType}} service.
+{{- with .Manifest.DocumentURL}}
+//
+// Documented at {{.}}.
+{{- end}}
 package {{.Manifest.Package}}
 
 import (
diff --git a/v2alpha/srv/srvmanifests.toml b/v2alpha/srv/srvmanifests.toml
index e35f422..9ac16f4 100644
--- a/v2alpha/srv/srvmanifests.toml
+++ b/v2alpha/srv/srvmanifests.toml
@@ -1,11 +1,14 @@
 [[dcp]]
 spec_zip_path = "standardizeddcps/Internet Gateway_2/UPnP-gw-IGD-TestFiles-20101210.zip"
 output_dir = "inetgw2"
+# https://openconnectivity.org/wp-content/uploads/2015/11/UPnP-gw-InternetGatewayDevice-v2-Device-20100910.pdf
 [[dcp.service]]
 package = "lanhostcfgmgmt1"
 type = "urn:schemas-upnp-org:service:LANHostConfigManagement:1"
 path = "xml data files/service/LANHostConfigManagement1.xml"
+document_url = "https://openconnectivity.org/wp-content/uploads/2015/11/UPnP-gw-LANHostConfigManagement-v1-Service.pdf"
 [[dcp.service]]
 package = "wanpppconn1"
 type = "urn:schemas-upnp-org:service:WANPPPConnection:1"
 path = "xml data files/service/WANPPPConnection1.xml"
+document_url = "https://openconnectivity.org/wp-content/uploads/2015/11/UPnP_IGD_WANPPPConnection-1.0.pdf"