Teacher: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.
Teacher: Now, understand the problem? Solve this instance: What is the proper way to write this term when writing product documentation? Hyphenated or not? drop down list or drop-down list?.
Student:
If it's just the compound adjective, use drop-down list. Note, however, that there are classes of components in various frameworks that are called DropDown or DropDownList or various alternatives of the same thing. In such cases use the framework name as is.