A graphical user interface is a method for issuing commands to a computer through direct manipulation of graphical images and widgets in addition to text. The buttons and menus used in Microsoft Word are an example of a GUI.

The chosen format to which a source document will be transformed. There may be more than one output target.

The original document, created in Word or Framemaker, that will be transformed by ePublisher Designer to an output target.

The process of converting a source document into a new chosen format.