Finding and replacing HTML.
You can also use this feature to replace HTML if you are comfortable editing in the Code view. This is where the Find and Replace feature really pays off. Just imagine changing URLs in hyperlinks, making changes to style tags, or changing references to images as shown here.
Replacing HTML is simple. First you enter a single line of HTML in the Find what box, and then you enter the replacement HTML in the Replace with box. Then you'd select the Find in source code check box before you click Replace All.