WithStyle is is an XML rendering and editing platform build for VisualWorks Smalltalk. It drives presentation off CSS and can provide rich WYSIWYG editing features for directly modifying an XML document. WithStyle can be used as a HTML or XML widget inside existing VisualWorks applications, or it can be deployed as a thin-client which can execute scripts or parcel's from a server URL. Alternatively, WithStyle can be delivered as a web browser plugin using VisualWorks's plugin support. WithStyle is completely dynamic, allowing scripts or Smalltalk code to change any aspect of a viewed XML document and have the UI update accordingly.