  Traditional trace links are established directly between source and target
artefacts. This requires that the target artefact exists when the trace is
established. We introduce the concept of indirect trace links between a source
artefact and a knowledge organization structure, e.g. a taxonomy. This allows
the creation of links (we call them taxonomic traces) before target artefacts
are created. To gauge the viability of this concept and approach, we developed
a prototype, TT-RecS, that allows to create such trace links either manually or
with the help of a recommender system.
