instruction:
Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
question:
Possible Duplicate: Person, Persons, People, Peoples Correct usage of 'persons' (vs. 'people') What's the correct plural of person? Persons or people?.
answer:
Both are correct and both are required in English language, you just have to know how to use them. People denotes a group, an unspecified number of people, for example: The people in the area have been warned about the possible risks. Persons refers to persons individually and denotes an exact number which can be, or should be able to, expressed in numbers, for example: Which persons are responsible for this fire? Remember that persons is usually used in law and legal documents, like: Lessor shall not be responsible for damage to Lessee's vehicle, whether or not such damage is caused by other vehicles or persons in the parking lot and surrounding area. Only such persons who are nominated in accordance with the procedures set forth in this section ...


question:
The B strings tuned w/ low E 7th fret harmonic-(6th string,7th fret).
answer:
The shorthand w/ is used to mean with. 2 pieces toast w/ gravy Is a shorter way of writing 'Two pieces of toast with gravy.' The B strings tuned w/ low E 7th fret harmonic-(6th string,7th fret). means 'The B strings tuned with low E, 7th fret harmonic . . .' Edited to add: As Denis de Bernardy correctly notes in the comment below, w/o means the opposite: without.


question:
Which one is correct in a sentence? He don't He doesn't I guess 'he doesn't' should be correct because he is third person singular but I've seen some people using do with he. Which one is correct?.
answer:

He doesn't is correct, because it is the contraction of He does not. He don't is incorrect, because it it the contraction of He do not. Subject-Verb agreement requires that he goes with does. He don't, however, is slang and certainly used in many places, but you would never see it in professional writing, because of Subject-Verb agreement.