When Windows XP is opened you can view the area with the help of buttons of the programs which are been currently open and the two small arrows which may be pointing up and down. If the button is somewhat darker it indicates that it is the button of the program which you are currently working with. By clicking on each button you will find out each of it in the respective program. When there are a number of programs explored in Windows XP at a particular time together then they all are been grouped under a button. For example, if you are having numerous windows of Internet Explorer been opened or a number of programs with the files. Then just by clicking, a window will decide which one to open from them. In this case you can make a choice between the three Internet pages displayed. Further to the right, as in the example above, there will be two black arrows which will help you to scroll the button in the event that we are working with several windows and they do not all fit on the task bar.