FCShowReferenceCard[{name}] shows the reference card
that corresponds to "name". Reference cards are stored in
Tables/ReferenceCards inside the FeynCalc main directory.
FCShowReferenceCard[] lists available reference cards.
FCShowReferenceCard[]\left( \begin{array}{c} \;\text{FeynArts} \\ \end{array} \right)
FCShowReferenceCard[{"FeynArts"}]