3nt says " Game in notrump - 2-4♣,2-4♦,2-4♥,5♠,19-21hcp,22-Tps".
There are many problems on it.
1- What's "game in notrump"? It tells its pd : pd,you never change my decision,even with 7-card ♥ !!!
Is it correct?
2- If there is 20-21hcp in opener hand with 5-card ♠,I am afraid that it should be a opening mistake.
IMO,the explanations of 3nt is " Solid 5-6 cards ♠ with 19-21hcp without any singleton / voidness ".
So I think this explanation on 3nt is incorrect.