This summary is not the rule. The rule text controls.
When there's too much paperwork or too many records for a jury to realistically look through, a person can use a summary, chart, or calculation instead of making everyone sit through piles of documents. This might include things like a stack of business records, hours of recordings, or a large number of photos. Instead of showing every single page or file, someone can present a shorter version that pulls out the key information.
However, there's a catch. The person using the summary has to let the other side see the actual original documents or copies of them. They need to make these available at a reasonable time and place so the other party can examine them or make their own copies. This gives everyone a fair chance to check that the summary is accurate and matches what the original records actually say.
The judge also has the power to step in and order the person to bring the actual original documents to court if needed. This helps make sure nothing is being hidden or misrepresented in the summary. The goal is to make trials more practical when dealing with huge amounts of evidence, while still protecting everyone's right to check the source material.