You are playing with a pickup partner at a regional pair event. It is your lucky day and partner is a local expert. You have agreed to play 2/1 ("expert standard" if you will), but have not had time to discuss more than the very basics. You deal and the auction goes
1D-2C-X-P
2S-P-3H-P
?
Is 3H forcing? What does it show? More generally, what structure do you like to play after the auction starts (with no further interference)
1D-2C-X-P
Benefits include:
Plus... it's free!