California, United States of America
The following excerpt is from People v. Cry, C082987, C083380 (Cal. App. 2020):
A trial court's sua sponte duty to " 'instruct on general principles of law that are . . . necessary to the jury's understanding of the case[]' . . . comes into play when a statutory term 'does not have a plain, unambiguous meaning,' has a 'particular and restricted meaning' [citation], or has a technical meaning peculiar to the law or an area of law [citation]." (People v. Roberge (2003) 29 Cal.4th 979, 988.)
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