single sourcing

from The Free On-line Dictionary of Computing (8 July 2008)

single sourcing

   <publication> Using a single original document set to generate
   {dead tree} and on-line {documentation}, and usually also
   on-line help.  In practice, it most often refers to a
   {FrameMaker} file set with {conditional text} which, when the
   conditions are set appropriately, allows you to create
   variants of the original document (e.g., for a product that
   runs on different {Unix} {platforms}) as well as for different
   media -- typically task-oriented on-line help to be accessed
   under {Microsoft Windows} or from a {web browser}, linear
   printed document, and {HTML} delivered via the {WWW} and/or
   {CD-ROM}.