NWG/RFC# 580                                  JBP 25-OCT-73 06:00  19849note to protocol designers and implementers Hereafter proposed protocols shall be submitted in the form ofon-line documents, preferably as nls files at the NetworkInformation Center. This will greatly facilitate the reviewprocess and enable editorial and substantive changes to proceedquickly. This also will permit timely updating of protocoldocuments as may be neccessitated by future decisions. On-linedocuments are also easily distributed to the network community.If you find great difficulty in complying with this requestplease contact me.                                                     It should be noted by all Telnet protocol readers and especiallyimplementers that all the existing Telnet Options that involvesubnegotiation are modified [see RFC 562] to terminate thesubnegotiation strings with IAC SE. The value of SE is 240. Alsonote that within subnegotiations the occurance of a byte with thevalue 255 [IAC] requires doubling that byte on transmission.           Please note that my address has changed to:     Jon Postel     The MITRE Corporation     Mail Stop W185     Westgate Research Park     McLean, Virginia 22101     Phone: (703) 893-3500 x2350On-line messages will reach me addressed to either     POSTEL@ISIor     JBP in the NIC Journal.