From the previous section, you can see that using ASP forms gives you a lot of flexibility in writing code that uses WSS Forms. However, it's easier to write code using just the renderer and pure HTML forms. Fortunately, you don't have to choose one or the other. You can intermix pure HTML forms with the special WSS Form markup with ASP or ASP .NET forms, which provide more complex functionality. In ASP or ASP .NET, you can use the WSS Form object model. Either approach will make writing Exchange applications a lot easier.