This manual assumes that you have a functional knowledge of VA Smalltalk and either WindowBuilder Pro or the Composition Editor. Both systems allows you to generate user interfaces without knowing how to program in Smalltalk. However, you will not be able to write the code necessary to create a fully functioning application. If you are new to Smalltalk, you should work through the examples provided in the Programmer’s Reference and either the WindowBuilder Pro or Composition Editor tutorials in Getting Started before proceeding with WidgetKit/Controls.