GLI[id,{indices}] is a generic loop integral, where the indices denote powers of propagators in the propagator basis (FCTopology) named id.
GLI[id,{indices}]
FCTopology
id
Overview, FCTopology.
GLI["topo1", {1, 0, 0, 1, 1}]
G^{\text{topo1}}(1,0,0,1,1)