What does the clone stamp in photoshop do?

I think it has something to do with taking something out of a picture. Can someone please tell me how to do this??What does the clone stamp in photoshop do?
The Cloning Stamp Tool does exactly what its name implies. Using this tool, you can copy a portion of an image and reapply it repeatedly to cover an unwanted portion of the image. The example below shows a telephone pole in the original image; the Clone Stamp Tool enabled us to cover the telephone pole with the surrounding grass, weeds and sky and create a new image that does not contain the telephone pole.What does the clone stamp in photoshop do?
The Clone Stamp tool uses one part of a image to change another part of the same image. It's useful for correcting tiny spots in a large space with little detail, like a speck of black in a sky or a mole on someone's face. Before using it, you must select a ';source point'; in the image. This tells PhotoShop what colors to use when covering things up. So, if you're changing a black speck in a sky to blue, select a nice blue part of the sky away from any clouds as your source point. Be careful, though because the source point will move as you drag the tool through the image. Because of this, you may want to change your source point if you're using the stamp on a large are or more than one area. Just Alt-click (Option-click on Mac, I believe) to select the source point. It should prompt you the first time. This is a great way to quickly retouch amateur photos or to delete something without using the eraser tool.
I LOVE the clone option! I use it to fix damaged family pictures. It is so very cool!





Atleast with mine, you place the marker where you want to copy FROM and them that marker moves with your paintbrush and ';clones'; the marked area and paints it on the area to be fixed.





Hope that makes sense :D
hold down ctrl or shift and drag the mouse near what u want to ';clone'; then let go of ctrl or shift and try clicking on the image and the image will start to clone itself