Iris near appèl courtyard (CIS 11)

Just before imprisonment is over, Iris B. directed to the prison courtyard.
With all the other prisoners, she has to come to an appeal.
What would be going on??
All in the attitude
All prisoners stand in rows of 10 in a row in the courtyard. Iris is somewhere in the middle.
They're all tense, because when they have to come to appeal, there's always something going on. But they have no idea what that could be.