  In application domains that are regulated, software vendors must maintain
traceability links between the regulatory items and the code base implementing
them. In this paper, we present a traceability approach based on the intuition
that the regulatory documents and the user-interface of the corresponding
software applications are very close. First, they use the same terminology.
Second, most important regulatory pieces of information appear in the graphical
user-interface because the end-users in those application domains care about
the regulation (by construction). We evaluate our approach in the domain of
green building. The evaluation involves a domain expert, lead architect of a
commercial product within this area. The evaluation shows that the recovered
traceability links are accurate.
