Classes for the creation of workbench parts that integrate
with the Eclipse Platform User Interface.
Package Specification
A workbench part is a visual component within a workbench page. 
There are two types: view and editor, as defined by IViewPart
and IEditorPart.   An editor is typically used to edit
or browse a document or input object.  A view is typically used to
navigate a hierarchy of information (like the workspace), open an editor,
or display properties for the active editor.  This package provides
a base implementation for the definition of views and editors.