pescetom, on 2021-January-08, 17:10, said:
Our solution is that 3♠ imposes trumps (invites opener to make a control-bid) whereas 2♦ is a generic game force without direction and orders partner to clarify his hand without taking initiatives (no fast arrival). From what I gather that seems fairly standard.
akwoo, on 2021-January-08, 18:07, said:
The way I play XYNT (aka two-way-new-minor-forcing), 3♠ sets trumps, suggests interest in slam, and asks (but does not demand) partner to make a control bid.
Pretty standard I would say, but the follow-up question is then the meaning of 1♦ - 1♠; 2♦ - 2♥; 3♠. I suspect this is simply a DNE for most pairs.