are they under a single topic?
materials can be under the same topic or not based on the collecting perspective (as the topic), for example:12
If the topic is discussing GTD methodology, then the followings in the same topic:
- What is GTD
- comparison of GTD against other methods
- general principles
- recommendation tools
- etc.
but if the topic is about GTD workflow, then
- general principles
- recommendation tools are in one note, but
- introduction of GTD
- comparison are not
Similarly, if the focus is how to apply GTD, then we can consider
- general principles
- recommendation tools can be re-mixed horizontally.3