This document discusses using single source principles to produce documentation for Eclipse RCP applications. It outlines typical documentation deliverables like printed manuals, help files, and online documentation. Traditional documentation tools have challenges like redundant content and complex workflows. The document proposes using DITA and the DITAworks toolset as a solution. DITAworks allows authoring once and generating documentation in multiple formats from a single source. It also facilitates content reuse and integration with development processes.