diff --git a/Doc/howto/sockets.rst b/Doc/howto/sockets.rst
index 04e9b98..80e98f7 100644
--- a/Doc/howto/sockets.rst
+++ b/Doc/howto/sockets.rst
@@ -23,8 +23,8 @@
 working. It doesn't cover the fine points (and there are a lot of them), but I
 hope it will give you enough background to begin using them decently.
 
-I'm only going to talk about INET sockets, but they account for at least 99% of
-the sockets in use. And I'll only talk about STREAM sockets - unless you really
+I'm only going to talk about INET (i.e. IPv4) sockets, but they account for at least 99% of
+the sockets in use. And I'll only talk about STREAM (i.e. TCP) sockets - unless you really
 know what you're doing (in which case this HOWTO isn't for you!), you'll get
 better behavior and performance from a STREAM socket than anything else. I will
 try to clear up the mystery of what a socket is, as well as some hints on how to