digraph G { Decl [ shape=record, label = "\n\nDecl|{name|access|decl_flags|extern_c_linkage}"]; a_1 [label="$\\frac{\\gamma}{2x^2+y^3}$"]; a_1 -> a_2 -> a_3 -> a_1 node [texmode="math"]; a_1 -> b_1 -> b_2 -> a_3; node [texmode="verbatim"] b_4 [label="\\feta"] b_5 [label="\frac"] a_3 -> b_4; c5 -> b_4; a_1 -> Decl; }