Patch #1015012.  Improve markup and punctuation in libsocket.tex
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 061d5c2..5d8a552 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -2981,7 +2981,7 @@
 #ifdef HAVE_SOCKETPAIR
 /* Create a pair of sockets using the socketpair() function.
    Arguments as for socket() except the default family is AF_UNIX if
-   defined for the platform, otherwise the default is AF_INET. */
+   defined on the platform; otherwise, the default is AF_INET. */
 
 /*ARGSUSED*/
 static PyObject *
@@ -3029,7 +3029,7 @@
 Create a pair of socket objects from the sockets returned by the platform\n\
 socketpair() function.\n\
 The arguments are the same as for socket() except the default family is\n\
-AF_UNIX if defined for the platform, otherwise the default is AF_INET.");
+AF_UNIX if defined on the platform; otherwise, the default is AF_INET.");
 
 #endif /* HAVE_SOCKETPAIR */