Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
This textbook chapter gives a good introduction to the different parts of a company description with examples and exercises.
ALTER, S.K. (2000): The Vision, Mission, Objectives and Business Description. In: ALTER, S.K. ALTER, S.K. (2000): Managing the Double Bottom Line. A Business Planning Reference Guide for Social Enterprises. San Francisco, CA: 44-61. URL [Accessed: 16.12.2015]