Chapter 1 lists six defining characteristics of technical communication. One characteristic is that technical communication addresses particular readers. What are three other characteristics mentioned in the chapter?

As the question refers to a specific source, "Chapter 1," without providing the title or author of the book or document, I cannot directly quote the six defining characteristics of technical communication from that source. However, I can provide a general answer based on common characteristics of technical communication as a field. Here are three characteristics that are often associated with technical communication:

1. **Purposeful**: Technical communication is designed to fulfill a specific purpose or achieve a particular goal. This could be to instruct, inform, persuade, or facilitate understanding of complex information. The content is created with a clear intention to help the reader or user accomplish a task or understand a subject.

2. **Practical and Task-Oriented**: Technical communication is often practical and focused on enabling the reader to perform a specific task or function. This could include user manuals, how-to guides, standard operating procedures, and other documents that provide step-by-step instructions or essential information needed to complete a task.

3. **Uses Design and Visuals**: Technical communication frequently incorporates design elements and visuals such as charts, diagrams, tables, and other graphical representations to support the text and aid in the reader's comprehension. Good design in technical communication improves readability, accessibility, and usability of the information.

These characteristics are not exhaustive and can vary depending on the source material you are referring to. If you have access to the specific chapter or text, you should be able to find the exact characteristics as listed in your material.