On Goodnotes Macbook, I believe that when I want to delete markings in an area, I would use the select function, and circle the area which selects the markings I want to edit and by pressing "delete" on my keyboard. But somehow that doesn't work with goodnotes, and apparently I could only switch to the eraser function. (Somehow the "delete function after double-tap is also greyed out, along with all the other functions including making screenshot, changing colour etc, not sure if its a glitch specifically regarding the macbook version of goodnotes, or is it something im simply not doing right)
Thank you good notes for constantly improving your services, good notes is somehow a huge part of my life now haha