I am a undergraduate student and I always use GoodNotes for notes during the class. I just import all PPT I have and sometimes find there do not have enough space while the whole PPT have my instructors’ notes. And If I just add another page to write, the information and the whole PPT will be much more messy. I just cannot find the important points from my professor and my own by add like 10 pages own notes with 3~50 pages of PPT. Add a "semi-hidden" tab, it will be very helpful to add my own notes without destroying the integrity of the original PPT. I drew a simple picture to show my ideas. There is enough space on the iPad to watch PPT and take notes at the same time, and then when not needed, adjust the size or hide one of them. Even though GoodNotes can now be used on two screens at the same time, I still hope that the course notes can be implemented in the same file.