Where is the Forms Designer tab?

Dear all,

I am trying to use the SharpDevelop. I have read that when editing a form file (.cs) one can switch to the Forms Designer by clicking a tab at the bottom of the code window. One example is shown in this page:

http://community.sharpdevelop.net/blogs/mattward/articles/FeatureTourVisuallyDesigningForms.aspx

However, I can never find such a tab when I view a default .cs file after creating a simple ASP.net webpage project -- there is no tab at all below the code window, no matter the default, plain or debug layout is being used. I am using version 4.3.3.9663-463ee024. Is the Forms Designer still there? If yes, how can I invoke it?

Thanks in advance.

Pengi.