Microsoft windows have standardized the user interface for a large number of applications by providing standardization at the following levels:
=> Overall visual look and feel of the application windows
=> Dialog Boxes
=> Help Features
=> Scroll Bars
=> Tool Bars
=> File open and save
This standardization level makes it easier for the user to interact with applications designed for the Microsoft windows operational environment. Standardization is being provided for object linking and embedding (OLE), Dynamic data exchange (DDE), and the remote Procedure calls (RPC). A compound document may consist of a number of different object types such as text, image, spread sheet data, and video. All applications required to operate on various sub-objects of a compound document cooperate in an integrated manner.