‘Questions presented are: ‘(a) Whether a request is an indispensable prerequisite to disclosure of exonerating evidence by the State? ‘(b) Whether material evidence favorable to an accused should be disclosed by the State without a request where such evidence is not recorded? ‘(c) Whether denial of due process of law is contingent upon a request where a State knowingly permits false testimony to remain uncorrected? ‘(d) Where a prosecutor shows his entire file to defense counsel at trial, but none of the exonerating items of evidence are contained in said file, does that satisfy the prosecution’s duty of disclosure? ‘(e) Whether nondisclosure of the prosecuting police department is imputable to the prosecution?