I am looking at a flight booking confirmation from Air China, which contains (among others) the following line:
DEP FRA-FRANKFURT 11FEB SAT 1910 CA 932 MMRFCDE/NW 30JUN 1PC
Now, this correctly describes the flight CA 932 from Frankfurt to Beijing on February 11, and "1PC" indicates the luggage allowance.
However, what is "30JUN"? I cannot find any information on the abbreviations "MMRFCDE" or "NW". Is it the period within which the return flight must be taken? The return flights have a slightly different abbreviation there, saying "QQRFCDE/NW", and they indicate a date a few days after the above flight.
There is something like a column header, but it is not quite clear which parts of that line it refers to, and it reads "舱位" - which appears to refer to the luggage allowance (but not sure about that).
EDIT: This is what the line looks like in its original formatting, together with the (badly aligned) column headers:
Note that the line written in Latin script is one word-wrapped line. There are multiple lines with recognizeably the same format across the document, and some have the date still on the upper line rather than wrapping it to the lower line.