<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31461719</termId><termName>cipher machines</termName><termType>PT</termType><termNote><![CDATA[ Devices made to create and decode ciphers; some examples include typewriter-based machines using electrical rotors to scramble messages one character at a time.  ]]></termNote><termCreatedDate>2026-03-30 21:04:15</termCreatedDate><relation><relationType>UF</relationType><termId>31461720</termId><termName>cipher machine</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31461721</termId><termName>machine, cipher</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31445336</termId><termName>writing devices</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31309564</termId><termName>ciphers</termName><termType>PT</termType></relation></term>  </Zthes>