  We provide the reader with a (very) short review of recent advances in our
understanding of the $\pi$-dependent terms in massless (Euclidean) 2-point
functions as well as in generic anomalous dimensions and $\beta$-functions. We
extend the considerations of [1] by one more loop, that is for the case of
6-loop correlators and 7-loop renormalization group (RG) functions.
