| Secret Codeword "Greengrocer"
What is the meaning of the codeword "Greengrocer"? 69 Sqdn RAF Operational Record Book, 1944, in each sortie's Summary of Events, classified "Secret", makes several references to contacting "Greengrocer". It seems to refer when perhaps radio contact is made to declare the recognition of something of importance or to declare an emergency. Any ideas? | 
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