In what circumstances will appellate counsel make an independent review of the trial court proceedings and determine no meritorious claims for appeal?

In this case, appellate counsel has made an independent review of the trial court proceedings and determined the record reflects no meritorious claims for appeal. He has advised appellant Pratt of his conclusion. He also advised appellant he could file a supplemental brief raising any issues Pratt believes merit our review. Appellant has not filed any such brief or letter. Pursuant to People v. Kelly (2006) 40 Cal.4th 106, 119 and People v. Wende (1979) 25 Cal.3d 436, counsel asks this court to make an independent review of the record. We have done so and find no issues meriting further briefing. We affirm the judgment.