Trump White House aide Madeleine Westerhout testified that Trump did not use email or a computer.

"What is Mr. Trump's preferred method of communications?" prosecutor Becky Mangold asked.

"He liked speaking to people in person or over the phone," Westerhout said.

"Did Mr. Trump use a computer?" Mangold asked.

"Not to my knowledge," Westerhout said, adding Trump did not use email.

"He liked hard-copy documents," Westerhout said.

Westerhout testified that Trump paid attention to details and signed things himself, preferably with a Sharpie.

"He preferred to sign things himself," Westerhout said.

"Did he typically read things before signing them?" Mangold asked.

"Yes," Westerhout said.

Jurors saw a map of the West Wing of the White House to demonstrate where Madeleine Westerhout's desk was in relation to the Oval Office.

"That is the area known as the outer oval office -- that is where the presidential secretaries or assistants sat," Westerhout told the jurors, highlighting the location of her desk.

Westerhout said she sat near John McEntee, Hope Hicks, and Keith Schiller, but no one sat closer to Trump's desk in the Oval Office than she did in the early days of the Trump administration.

"Who was the focus of your job?" prosecutor Becky Mangold asked.

"The president," Westerhout responded.

Before she worked in the White House, witness Madeleine Westerhout worked at the Republican National Committee.

On the stand, she testified about the aftermath of the release of the infamous "Access Hollywood" tape.

"It was a tape of Mr. Trump and Billy Bush," she said. "At the time I recall it rattling RNC leadership."

Prosecutor Becky Mangold asked, "Did the RNC consider replacing Mr. Trump as a candidate?"

Westerhout told the jury, "It's my recollection there were conversations how it would be possible to replace him as the candidate if it came to that."

Westerhout testified that after Trump won the election, she helped with the presidential transition.

She said she earned the nickname "Greeter Girl" in the media after she helped coordinate meetings at Trump Tower, appearing in videos and photos accompanying potential Trump appointees in the Trump Tower lobby.

Prosecutors have called their next big witness: Madeleine Westerhout, who was Trump's director of Oval Office operations in the White House.

Westerhout was subpoenaed to testify.

Asked if she is nervous to testify, she responded, "I am now." This is her first time in a courtroom, she said.

Trump leaned forward in her chair, watching her intently.

Jurors saw a summary exhibit prepared by DA office paralegal Jaden Jarmel-Schneider that breaks down the 34 records that prosecutors allege Trump falsified in the course of repaying Michael Cohen for Stormy Daniels' hush money payment.

The exhibit shows each of the vouchers, checks, and invoices -- broken down by each criminal count -- that prosecutors say Trump falsified to disguise his reimbursement to Cohen.

The chart appears to be the jury's clearest roadmap so far to each of the documents at the center of the case.

Defense attorney Emil Bove -- once a paralegal himself -- began his cross-examination by asking Jarmel-Schneider how much time he spent on the project, suggesting it was "tedious."

"Honestly, I kind of enjoyed it," Jarmel-Schneider said, prompting jurors and several members of the gallery to break out into laughter.

"I hear you -- respect," Bove said in a rare moment of levity.