But he should know that once the issues for determination have taken full account of the grounds of appeal filed, he ought not to abandon those issues and base his arguments on the grounds of appeal one by one. Quite apart from the intendment of the Rules, that argument in a brief shall be based on the issues, the advantage of this is that whereas a successful argument of a ground of appeal does not necessarily result in the appeal being allowed.
– Nnaemeka-Agu, JSC. Adejumo v. Ayantegbe (1989)