You must include in your notes everything that is relevant to what is the purpose of your note and everything that helps that goal to be achieved. For example, if you are doing scientific research notes, you should put information such as dates of events related to your annotation, authors with works related to your research, and other information.
On the other hand, you should exclude superfluous, unnecessary information that distracts or is about different subjects.
Should Not: Do not put write everything in the text.
Explanation:
Notes should be simple, they should summarize whatever you are reading, key points mainly. Your notes should not be more than 1 sentence per paragraph. Do not write about everything, I can not say this enough only put in the Main Points of the text.
