Right, what we are going to do now is create a dummy variable, right, let's call it D one right so if you type D one equals zero and press the return key  what you created there, right, is a new variable called D one and it assumes the value of zero, right, what I want you to do now is to edit this variable, so type edit space D one press the return key  right, if you type on edit space D one you'll then get a sheet that has all the observations for our variable D one.