In certain high court you have the original side and the appellate side.and along with the monthly list a daily list is also published.
In every list there are seperate space alloted for the respective honble benches.
In those you will find 1st on your left hand side the serial no(which can also be refered to as the item no) followed by the case no then the cause tile and in some cases at last the Advocate on records name appear.
Now on the display board you see the serial no/and there are certain other sings to denote whether appellate side or original side /daily list or monthly list is being called on in that room.
For example lets say item no 39 from appellate side daily list is being called on in court no2 then on the board you will see AD 39 in the space alloted for court no 2 similarly if item no 2 from appellate side monthly list is being called then in the space alloted for court no 2 you will see A 2 or for example Original side daily list is being called on in court no31 and item no 6 is being heard then on the board you will see OD 6 in the space alloted for court no 31 similarly if item no 22 from Original side monthly list is being called then in the space alloted for court no 31 you will seeO6
Any wayi am not sure whether this system prevails in all the high courts or not