side by side
There should be a horizontal 'side by side' option similar to the vertical side by side on the desktop version. Effectively a 'top and bottom'.
In our example, we display 2 worksheets from 1 workbook on a monitor. A lot of screen space is wasted with all of the tabs, headers etc. Displaying 2 worksheets top and bottom (or side by side as the circumstance requires) would be faster, cleaner and more beneficial.