Shortcut to move one screen to the right/left in Excel The official docs say to use Option-Up/Down



I tried that - as well as Option-Left/Right and Command-(any arrow keys) and they all do different things than the page right/left.

So is there any way to get this functionality short of point and click?

Update By playing around a bit more an answer was discovered:  the Command-Left|Right Arrow will page left/right to the next non-empty cell. I had been seeing it page to the beginning/end since the particular rows had few entries.

Hold on ..  So the behavior is that the `Command-Left|Right Arrow will move to the next non-empty cell if there were other intervening empty cells.  So in the case of a row with all entries filled - e.g. the Header Row - a single invocation puts you at beginning/end of the entire row: so in that case it behaves like Row Home/Row End.  

This is not acceptable behavior: is there any workaround?
Although it seems counter intuitive not to use the left/right arrows, (that is a subject for giving Microsoft some feedback) using the following key combinations work for Excel 15.xx for Mac:

Using Built-in MacBook Keyboard:
Page Right: fn+⌥ option+↓ down arrow
Page Left: fn+⌥ option+↑ up arrow
Using External Apple Wired Keyboard:
Page Right: ⌥ option+page down
Page Left: ⌥ option+page up

As noted in the OP's screenshot.