samba-functionality/overview.md

@@ -76,10 +76,16 @@ authentication server for this protocol.
 
  * [source4/kdc](https://git.samba.org/?p=samba.git;a=tree;f=source4/kdc)
 
-### [DCE/RPC Server](dce-rpc-sever)
+### [DCE/RPC Server](dce-rpc-server)
+
+This implements as much of Microsoft's version of DCE/RPC as is
+necessary for Samba.
 
 ### [Replication client and server](drs-replication)
 
+DRS (Directory Replication Service) maintains consistent state across
+multiple domain controllers.
+
 ### Group Policy server
 
 Group Policy turns out to be quite simple on the server, it simply