--- Libc/Libc-262/net/byteorder.3
+++ Libc/Libc-498/net/byteorder.3
@@ -56,6 +56,7 @@
 .Sh DESCRIPTION
 These routines convert 16 and 32 bit quantities between network
 byte order and host byte order.
+(Network byte order is big endian, or most significant byte first.)
 On machines which have a byte order which is the same as the network
 order, routines are defined as null macros.
 .Pp