72P9 ...[??? IDFREAD SECT COMM FGN 25 DOC   
 786B ...#MAC  IDFREAD                      [READ FIRST RECORD FROM IDF  
 787* ...      LDN   2  1
 788# ...      READED   2,4  
 789? ...      TESTREP  OK,M90   
 789Q ...      DOWN     SETIDF,3       [SET ALARM INDICATOR  
 78== ...      GEOERR   1,READ   
 78?9 ...M90 
 78#8 ...      MHUNT      2,FILE,FRRB       [LOCATE FILE READ BLOCK  
 78*7 ...      ADN   2  A1                  [ADD IN RED TAPE 
 78B6 ...#NOR