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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 video, we'll look at how you can use the CHOOSE function. We also compare a formula based on CHOOSE vs. a formula based on VLOOKUP.
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, learn how to use VLOOKUP to build a simple form to extract employee information from a table, in about 3 minutes. VLOOKUP is a key Excel function.
This video shows how to use VLOOKUP to merge data in two tables based on a common ID. You can even use this technique to reorder the columns you retrieve.
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.