  We present STR (Star-Triangle Relations), a Mathematica package designed to
solve Feynman integrals by means of the method of uniqueness in any Euclidean
spacetime dimension. We provide a set of tools to draw Feynman diagrams and
interact with them only by the use of the mouse. Throughout the use of a
graphic interface, the package should be easily accessible to users with little
or no previous experience on diagrams computation.
