Switch b/w edit and read mode.
It would be convenient to switch b/w edit and read mode w/o reopening the document.
Wenjun Gong (MSFT Product Team) commented
Thanks for posting this request. As I just answered in another post from you, to switch from edit mode to read mode, you can click the ribbon "View" tab then click the "Reading view" button.
To switch back to editing view, you can click the "Edit Document" button then select "Edit in Word Online" on the header toolbar.
Hope this helps and looking forward for your more ideas.