Expand and Collapse bullets (sub bullets) in notes on a page (like 2016)
In OneNote 2016 I can double click on carrot next to a bullet that has sub-bullets in my notes on a page and it will toggle between showing/hiding all sub-bullets. Please add this to the OneNote App. When managing a list/notes on a page that are detailed/lengthy with sub-bullets it is awesome to be able to shrink all items to only the top bullet for a summarized view of my list and then expand items as needed. In 2016 when there are hidden sub-bullets then there is a "+" icon to the left of the row.
The carrot in the onenote app only appears on mouseover - your cursor will turn into a 4 way arrow, and the grey carrot itself that appears looks more like => than a + sign. You also have triple click and ctrl+a twice for the same effect.