Add text in top of chart

[SpookiePower]

I have added a Line chart in my document, but I would
like to write in the top (on the chart) what this chart shows.

But how do I add lines of text onto the chart ?

 

[OssieMac]

Check out Chart title in Help. If not really what you need then you can try
inserting a Text Box as follows:-

XL 2007
Select Insert Ribbon
Select Text box (In Text block far right of ribbon)
The cursor changes shape. Click on chart and hold mouse button while you
drag the text box out to the required size.
Enter text in the text box.

XL2002 and 2003
Show Drawing toolbar (Select menu item View -> Toolbars -> Drawing)
Note that the Drawing toolbar might show at the bottom of the worksheet.
Click Text box icon.
The cursor changes shape. Click on chart and hold mouse button while you
drag the text box out to the required size.
Enter text in the text box.