I will admit I am impressed how Google provides redirects for such older links. And while I was at it, I tweaked the link description from "this" to at least "this post".
Applied (revision 245565). Gerald 2017-02-18 Gerald Pfeifer <ger...@pfeifer.com> * doc/xml/manual/io.xml: Update link to groups.google.com. Tweak link description. Index: doc/xml/manual/io.xml =================================================================== --- doc/xml/manual/io.xml (revision 245564) +++ doc/xml/manual/io.xml (working copy) @@ -576,8 +576,8 @@ <para> An instructive thread from comp.lang.c++.moderated delved off into this topic starting more or less at - <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://groups.google.com/group/comp.std.c++/browse_thread/thread/f87b4abd7954a87/946a3eb9921e382d?q=comp.std.c%2B%2B+binary+iostream#946a3eb9921e382d">this</link> - post and continuing to the end of the thread. (The subject heading is "binary iostreams" on both comp.std.c++ + <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://groups.google.com/forum/#!topic/comp.std.c++/D4e0q9eVSoc">this post</link> + and continuing to the end of the thread. (The subject heading is "binary iostreams" on both comp.std.c++ and comp.lang.c++.moderated.) Take special note of the replies by James Kanze and Dietmar Kühl. </para> <para>Briefly, the problems of byte ordering and type sizes mean that