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Extend the selection to the last cell down

Windows shortcut 
CtrlShift
Mac shortcut 

If the active cell is empty, Excel will extend the selection to the first non-empty cell below the active cell. If the active cell is non-empty, Excel will extend the selection on the last non-empty cell below the active cell. On a Mac, the command key (⌘) can be used instead of the control key.

Related videos

The videos below demonstrate this shortcut.
In this lesson, we cover shortcuts you can use to extend selections.
Once you have one pivot table set up, you might want to see a different view of the same data. In this video, I'll show you how to base one pivot table on another.
In this lesson, we'll show you how to use conditional formatting and a forumula that uses the LEN function to highlight text that is too long.
In this video, we'll look at how to use conditional formatting to shade alternating groups of rows - groups of 3 rows, groups of 4 rows, and so on.
In this video, we'll look at a simple way to use VLOOKUP to group data into specific categories.