Difficult to reuse appropriate software components.

Proper documentation is required.(assumptions, post conditions etc)and also (how and where component can be used)

Information provides correct reuse context for component.

Interested in Contractual semantics rather than implementation.

Primary steps for documentation for reuse

Identfying and Extract Primary Artifacts.

Identify and Extract all related and Secondary Artifacts.

Document the Internal Component Functionality

Document and categorize the External Component Functionality

Parameterize any Dependencies if neccesary

Catalogue the Component.