the act or circumstance of proving or being proved conclusively, as by reasoning or a show of evidence: a belief incapable of demonstration. 2. something serving as proof or supporting evidence: They sent a check as a demonstration of their concern.
Code Yellow: Usually used for bomb threats. Code Purple: Child abduction, or when assistance is needed for a patient who is too heavy to transport. Code Pink: Infant or child abduction. Code Silver: Combative person with a weapon.
The Japanese code dubbed Purple, which was used by the Foreign Office and only for diplomatic (but not for military) messages, was broken by Army cryptographers in 1940. A 14-part message using this code, sent from Japan to its embassy in Washington, was decoded in Washington on 6 and 7 December.