It needs to be stressed that every point in controversy between the parties in an appeal is, in a loose sense, an issue. But for purposes of a brief, an issue is one, which is so crucial that if it is decided in favour of a party, he is entitled to win the appeal. Any question which does not adequately raise a substantial issue which if resolved one way or the other will affect the result of the appeal is not a proper issue for a brief. See Okoye v. Nigerian Construction and Furniture Co. Ltd. (1991) 6 N.W.L.R. (Pt. 199) 501 at 542.
— Edozie JSC. Cosm As Ezukwu v. Peter Ukachukwu Jude Ukachukwu (SC. 160/2000, 2 July 2004)