Its content mainly includes the confession of a suspect or a defendant to acknowledge a crime and his exculpation to declare himself innocent or guilty of a venial crime.
Albus never attempted to deny that his father (who was to die in Azkaban) had committed this crime; on the contrary, when I plucked up courage to ask him, he assured me that he knew his father to be guilty.
A jury, by the way, consists of from six to twelve ordinary citizens who are chosen by lottery to hear a case and decide, under instructions from the judge, on whether the persons being tried are guilty or innocent.