How have the courts interpreted the "best evidence" rule?

Preliminarily, we note that in admitting the documents, the trial court made no reference to the best evidence rule, although defense counsel's objection may reasonably be construed to raise such issue. The remarks of the trial court in passing on the admissibility of evidence do not affect the validity of its determination to admit the evidence, for in measuring the correctness of a trial court's rulings we look to what the trial court did, not to what it said. (People v. Garrett (1972) 29 Cal.App.3d 535, 540, 104 Cal.Rptr. 829.) We thus address appellant's contentions.