The Boolean setting of $FCShowIEta
determines whether
should be displayed in the
typesetting of propagator objects (except for FAD
s) or not.
This setting affects only the TraditionalForm typesetting and has
absolutely no influence on the internal handling of propagator
denominators in FeynCalc.
$FCShowIEta
[{p, m^2}] SFAD
= False
$FCShowIEta
[{p, m^2}] SFAD
= True $FCShowIEta