Final answer:
In block paragraphs, use single spacing, avoid double space between paragraphs, and do not use headings for clear and professional communication.
Explanation:
When using block paragraphs in messages, one should:
- Use single spacing.
- Not use double space between paragraphs.
- Not use headings.
Block paragraphs are aligned with the left margin without indentation, making them easy to read in messages and letters. It is important to follow these guidelines for clear and professional communication.
Learn more about paragraph formatting here:
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