TELNET_TTYPE_IS   635 src/dps8/libtelnet.c         if (buffer[0] != TELNET_TTYPE_IS &&
TELNET_TTYPE_IS   643 src/dps8/libtelnet.c         if (buffer[0] == TELNET_TTYPE_IS) {
TELNET_TTYPE_IS   656 src/dps8/libtelnet.c                 ev.ttype.cmd  = TELNET_TTYPE_IS;