Moscow rules are prominently referenced in John le Carr?s cold war books including " Tinker, Tailor, Soldier, Spy " and " Smiley's People ", as tradecraft, including use of inconspicuous signal markers ( drawing pins, chalk marks ), the use of dead drops, and the ways to signal the need for a ( rare ) face-to-face meeting.
12.
Demands from Broadcasting House meant that Hayes had less time than he had thought to design a decor for the fa�ade, leading to him puncturing a scale foam model of the wall with drawing pins, and thus the birth of the iconic'Atomic Dots': there are 26 across the fa�ade of Studio 1, each one backlit and clearly visible at night.
