DocLine: a method for software product lines documentation development The DocLine method designed for developing documentation for software product lines is presented. The method makes it possible to reuse document fragments with adaptation to a particular usage context. The method provides the Documentation Reuse Language that has a graphical part (for designing the structure of documentation packages) and a text part (for implementing the documentation). It also describes a process for developing documentation and a toolset architecture based on the DSM approach and Eclipse GMF technology.