Adobe Illustrator CS3 offers users a convenient way to edit grouped objects called Isolation Mode. In previous versions, in order to work on an object that was grouped with other objects, you would have to switch to the Direct Selection tool (white arrow), and then contend with trying to see just the path of the object you want to work on mixed among all the other paths. 
Isolation Mode allows you to double click an object you wish to work on which is grouped with other objects, and edit it as if it were no longer grouped. The advantage is that Illustrator doesn’t actually ungroup the objects, it just isolates them for you. It also offers the added advantage of fading out the other objects in the document to make it easier on the eyes. To exit Isolation Mode, simply right click (Control click) on the page and select Exit Isolated Group.
