The Microsoft Visual Basic for Applications window displays your VBA environment in Excel 2013:
Next, let's analyze the Code window in the VBA environment. The Code window is usually found to the right of the Project Explorer in Excel 2013. It displays the VBA code for the object currently highlighted in the Project Explorer.
In the example above, it is displaying the VBA code for the module called Module1.
If the Code window is not visible when you open the Microsoft Visual Basic for Applicationswindow, you can make it visible by selecting Code under the View menu.