  This paper shall provide a summary of not yet published technical innovations
to the GREGOR Fabry-Perot Interferometer (GFPI) at the 1.5m GREGOR Solar
Telescope (Europe's largest solar telescope) that I implemented in 2013 as the
Instrument Scientist of the GFPI. It also represents an overview of important
and not yet published observational results that I achieved with the GFPI in
2013. The results and achievements can be considered a milestone in the further
development, scientific verification and final acceptance of this instrument.
The instrument is now in operation and employed by the international scientific
community.
