002/19-09-2007-ECCC-OCIJ ЮŲŠ / No: D427 95. Within the zones, a telegram unit consisted of a telegram coder, a transmitter or operator and a typist or secretary.274 96. Outgoing messages from the Centre were first sent to the telegram coding unit which was located at the Party Centre office K-1 to be encoded into number codes.275 The encoded message was then forwarded to the operation group at K-18 that transmitted the messages to the recipients in coded form, where they decoded it into plain text.276 Incoming telegrams from the zones arrived at K-18 and were written down by the typist group. The encoded message was then sent to K-1 for decoding and transmitted to the receiving Party cadre.277 Incoming telegrams were forwarded to other cadre upon the decision of Pol Pot and his staff, who received copies of all messages.278 Where the word “document” was attributed to a message, this implied that it was to be kept in the archive of the respective telegram translator.279 Copies of the coded and the text versions of the telegram had to be kept for six months before they were burnt.280 97. The following recipient code names were frequently used in telegrams: “Grand Uncle” for Pol Pot;281 “Grand Uncle Nuon” for Nuon Chea;282 “Grand Uncle Vann” for Ieng Sary;283 “Grand Uncle Vorn” for Vorn Vet;284 “Uncle Hem” for Khieu Samphan;285 “Respected Brother” for Pol Pot;286 “K-3” for Office of Khieu Samphan and Nuon Chea;287 and “K-1” for Office of Pol Pot.288 98. The number “870” was identified by several witnesses as the code number of the Centre.289 Charged person Khieu Samphan states in this regard: “Pol Pot signed documents by writing 870”.290 The word “M-870” was identified by witnesses as the code number for the Central Committee Office291 or for Nuon Chea and Pol Pot interchangeably.292 The word Committee 870 referred to the Central Committee.293 According to Charged person Duch: “Any fax or letter with the name “Pol” “870” or “Office 870” referred to Pol Pot”.294 Political and Education Material Print Media 99. The Revolutionary Flag and Revolutionary Youth magazines were the most important CPK propaganda magazines and refelected the views of the senior Party leaders, in particular the views of the Standing committee, although there were also other magazines produced during Extraordinary Chambers in the Courts of Cambodia, National Road 4, Choam Chao, Dangkao Phnom Penh Mailing address: P.O. Box 71, Phnom Penh; Tel: +855(0)23 218914 Fax: +855(0) 23 218941. 30