In the book How to take smart notes is suggested that the permanent notes should:

• be divided one for each idea and be formulated so they can be understood on their own to make it easier to understand it later.
• do not be organised by topic to allow to link the ideas to various topics and not restricting himself to a single topic. However a note can be used to write an overview of a topic.
• be linked to related notes.
• fit onto one screen and there should be no need to scrolling.

Related Questions:

Related Topics:

• How to take notes
• Questions to write a permanent note

References

• How to take smart notes | 2017 | Sönke Ahrens