Designing Information for the Online Medium 
Well-designed online documentation exploits the medium to make the content more accessible and effective. Knowing who needs the information and understanding when and how much of it will be used are essential for the creation of effective online content. Ideally, online documentation should answer each question with just the right amount of depth and detail. Considering user expertise, information needs, and usage patterns before creating the content or structure results in information that can be scanned, searched, surfed, referred to, read, or printed equally effectively—exactly what people expect from online documentation.
Mehrotra, Rahul and Jane Nye. STC Proceedings (1998). Articles>Documentation>Online