RFC 1460 was obsoleted by RFC 1725, which was in turn obsoleted by RFC 1939. RFC 4695 has been obsoleted by RFC 6295 in 2011. In 2018, RFC 7539 was obsoleted by . So that experiment has been obsoleted in 2012 by RFC 6530. The ihave/sendme protocol was obsoleted by NNTP. It has been obsoleted by inotify, but will be retained for compatibility reasons. MMDS may be obsoleted by the newer 802.16 WiMAX standard approved since 2004. Additionally, the obsoleted pentathlon event was replaced by the heptathlon. It has been obsoleted by Calligra Words of the Calligra Suite. PMCDs were subsequently obsoleted by the more modern and generalized DDP specification. These standards were eventually obsoleted by PGP and S/MIME, competing e-mail encryption standards. Hubs and repeaters in LANs have been largely obsoleted by modern network switches. Before the FD mount was obsoleted by the EOS system, Canon built four autofocus lenses. By 1989, the FDS was inevitably obsoleted by the improving semiconductor technology of game cartridges. Eventually more advanced mainstream home computers and game consoles obsoleted the MSX machines.