Select "edge loop" or similar is R6?

Several modeling packages one can select an edge and with an operator select all, or some connected edges. Is there an equivalent in R6? (WIP7 has edgeloop selection in SubD. )

I thought SelectChain might be it, but I did not get what I expected.Is this the command I’m looking for? The help page just says:
“Select curve or surface edges that touch end-to-end with G-0/G-1/G-2 continuity.”
Pardon my ignorance, I have no idea what G continuity is?