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In an indication of the respect Mr. Gabriele still feels for Monsignor Gaenswein, he stood up from his bench when the priest entered the courtroom and then again when he exited. Monsignor Gaenswein didn’t acknowledge him.

The trial resumes Wednesday with the testimony of four members of the Vatican police force who conducted the search of Mr. Gabriele’s Vatican City apartment on May 23. In testimony Tuesday, two police officers said they discovered thousands of papers in Mr. Gabriele’s studio, some of them originals.

During the testimony, Ms. Arru, the lawyer, complained about the conditions under which Mr. Gabriele spent his first 20 days in detention, saying the cell was so small he couldn’t stretch out his arms and that lights were kept on 24 hours a day.

Mr. Gabriele said those conditions contributed to his “psychological depression.”

Judge Dalla Torre invited the prosecutor to launch an investigation, which he did. The Rev. Federico Lombardi, the Vatican spokesman, said the size of the cell conformed to international standards and that, anyway, Mr. Gabriele was moved to a bigger cell.

The Vatican police responded quickly with a lengthy statement insisting that Mr. Gabriele’s rights had been respected, citing the food, free time, socializing, spiritual assistance and health care that Mr. Gabriele enjoyed during his nearly two months of detention. They said the lights were kept on for security reasons as well as to ensure Mr. Gabriele didn’t harm himself, and that he had a mask he could use to block out the light.

The police warned that they may file a countercomplaint against Ms. Arru if the investigation shows no wrongdoing on their part.

The trial is being conducted according to the Vatican’s criminal code, which is adapted from the 19th-century Italian code. The court reporter doesn’t take down verbatim quotes but rather records reconstructed summaries dictated to her by the court president, Judge Dalla Torre.

On several occasions, Judge Dalla Torre truncated the responses or, with the help of the notary and the prosecutor, reconstructed them, occasionally attributing to Mr. Gabriele and other witnesses words they didn’t necessarily utter, or leaving out parts of their testimony altogether. For example, the recorded summary of Mr. Gabriele’s plea didn’t include that he loved the pope as a son would.

The recorded testimony was read aloud to each witness for any corrections at the end. Mr. Gabriele was able to make corrections as each summary was recorded, but his full testimony was not read back to him at the end.