When you try to build your site using the Build menu, the Output window tells you whether or not
the build succeeded. If the build failed, for example because you have a programming error, it tells
you why the build failed. In the commercial versions of Visual Studio, the Output window is used
for other information as well, including the status of external plug-in programs. Building — or compiling
— websites is discussed later in this book, including in Chapter 19, which deals with deployment
of your website.