Is there any case law where the trial court abused its power to restrain a defendant in a mental health case?

In light of the fact that defendant had made a threat of violence, it does not appear that the trial court abused its discretion. It should further be noted that the trial court attempted to use physical restraints that were as unobtrusive as possible. In fact, there is nothing in the record to indicate that the jury was even aware of the physical restraints. "It is elementary that the function of an appellate court, in reviewing a trial court judgment on direct appeal, is limited to a consideration of matters contained in the record of trial proceedings, and that 'Matters not presented by the record cannot be considered on the suggestion of counsel in the briefs.' " (People v. Merriam (1967) 66 Cal.2d 390, 396-397, 58 Cal.Rptr. 1, 5, 426 P.2d 161, 165, [80 Cal.App.3d 552] overruled on other grounds in People v. Rincon-Pineda (1975) 14 Cal.3d 864, 882, 123 Cal.Rptr. 119, 538 P.2d 247.)

5. Should the trial court have instructed the jury to disregard the restraints?

Finally, defendant claims that the trial court should have, sua sponte, instructed

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