log-files: Initial two Char?

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Carl Schreiber
Moderator
7274
Carl Schreiber  

Does anybody know what are the meanings of the initial two char. of the log-files:

DO, MG, RQ, RH, CG, HN, RF, OM, DQ, IS, CR, LQ, MP, OL, DE, EK, ER, HS, IO, KF, KE, JL, ...

Is it somewhere documented?

Stanislav Korotky
25198
Stanislav Korotky  
This is a check sum calculated on the log content, so MQ can be sure that sended/posted fragments are not altered (intentionally) somehow and produced directly by the terminal.
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