N.B. stands for-

1. Meaning: "Nota bene" is Latin for "note well." When used in English, it serves as a way to highlight or emphasize important information.

2. Placement: "N.B." is typically placed at the beginning or within a written document, article, or text to alert the reader to pay special attention to a particular point.

3. Usage in Text: It is commonly used before a crucial piece of information, a reminder, or a clarification. For example, if you're writing instructions, you might use "N.B." to indicate a key step or a critical detail.

4. Capitalization and Punctuation: "N.B." is usually capitalized with periods between the letters. It's an abbreviation, and maintaining this format helps it stand out.

5. Clarity: Ensure that the information following "N.B." is clear and concise. It's meant to be a quick and effective way to communicate an essential point.

6. Not Overused: While "N.B." can be a valuable tool for drawing attention to important details, it's best not to overuse it. Reserve it for genuinely noteworthy information to maintain its impact.