• Table of Contents
• Introduction
• Test as you write the lens
• A sample control file
• The lens squeleton
• The first lens: source fields
• More complex lens: Uploaders
• Parsing the Package field and factorisation of lenses
• Maintainers: a not so simple entry
• Parsing the dependency list (first try)
• Parsing the dependency list (second try)
• Parsing the control paragraphs
• Description: A multi line field
• Putting it all together
• Write or "put" tests
• Conclusion