The document provides a summary of 25 years of Lotus Notes/IBM Notes in 25 "Notes" or key points. It discusses the evolution of the software over time, including early versions of Lotus Notes in the late 1980s and 1990s, the introduction of new features and capabilities in subsequent versions, and IBM's acquisition of Lotus Development Corporation in 1995. The summary highlights some of the major milestones and innovations for the collaborative software platform over its 25 year history.