Hi,
I have been studying my late mother's WWII RAF service record and have noticed something I do not understand. 
I have Form 543 - 2 large brown sheets.  On sheet 2 (which may be the reverse of page 1) is a column headed "Occ. M. Qtrs".  I am guessing that this means Occupying Married Quarters.  Is this correct?
This column is empty apart from one entry sometime in 1942/43 which has a circle with a dot in it.  What does this mean?  
The same row as the circle/dot has in the date column "5(P) AFU".  I believe that AFU means Advanced Flying Unit, but what is 5(P)?
If she is occupying married quarters can I assume that she is married?  Page 1 contains nothing in the Marriage box and next of kin is her mother.
Thank you for any help on this puzzle.  If we do not know a definitive answer, is there anywhere that I can go to for an answer?
Ian