+#define TELOPT_TN3270E 40 /* TN3270 enhancements */
+#define TELOPT_XAUTH 41
+#define TELOPT_CHARSET 42 /* Character set */
+#define TELOPT_RSP 43 /* Remote serial port */
+#define TELOPT_COM_PORT_OPTION 44 /* Com port control */
+#define TELOPT_SLE 45 /* Suppress local echo */
+#define TELOPT_STARTTLS 46 /* Start TLS */
+#define TELOPT_KERMIT 47 /* Automatic Kermit file transfer */
+#define TELOPT_SEND_URL 48
+#define TELOPT_FORWARD_X 49
+#define TELOPT_PRAGMA_LOGON 138
+#define TELOPT_SSPI_LOGON 139
+#define TELOPT_PRAGMA_HEARTBEAT 140