A more thorough explanation:

XQ

XQ is an abbreviation for cross-question, which is a type of question asked to a witness during a legal proceeding. It is also known as a categorical question and is part of a series of questions asked to gather information from the witness.

During a trial, the lawyer asked the witness a series of XQs to get more information about the event.

One example of an XQ is "Can you describe the suspect's appearance in detail?"

The examples illustrate how XQs are used to gather specific information from a witness. The lawyer asks a series of questions, including XQs, to build a case and get a better understanding of what happened. The XQ example shows how the question is focused on a specific detail, in this case, the suspect's appearance.