WebDesign provides many features to help make working with XHTML very productive. When working with XHTML documents it is important to set the document type to XHTML by selecting XHTML from the Document Types menu (2nd button from the right). WebDesign will automatically set this document type when creating a new XHTML file using an XHTML doctype or opening a document with an extension specified under the 'Edit Modes' tab in the preferences dialog. WebDesign's HTML wizards will generate proper XHTML code by default when working in XHTML mode.
The Attribute Editor will also output proper XHTML code when editing a tag's attributes. WebDesign will always insert lowercase code and make sure any code it enters is in the proper XHTML syntax.