On January 27th, in the year twenty-ten, Steve Jobs announced to the world Apple’s latest creation, the iPad. People are still trying to figure out if it’s a laptop replacement or a Kindle killer. They also want to know whether they need one.

BlackBerry® smartphones excel when it comes to working with large amounts of e-mail. They ship configured to allow easy dialing from the Home screen. Changing this setting unlocks an array of shortcut keys.

You can use the AutoFill handle to quickly drag a series into existence. You can drag days of the week, months of the year, or a numerical series — you can even create your own custom series.

When working in Excel, you may wish to see the formulas in use on your worksheet to help you track down an error, or to see which cells are dependent upon other cells.
To toggle the display of formulas on a sheet:

In the Tools menu, click Options.
On the View tab, in the Windows options area, [...]

You can use data validation to restrict the type of information allowed in a given cell (or cells). You can also specify a range of valid data for numerical, time or date values, and even text length. In addition, you can use data validation to limit data to a predefined list of acceptable items.
To set [...]