The explanation of 2♥ is "Limit raise or better in C; 4+C; 10-12 total points". If it's "or better", why is is limited to 12 total points? Why would WestGIB make this bid with this hand?
The explanation of 2♠ is "4+C; 21-HCP; 15-22 total points; forcing to 3N". Does the bid say anything about spades? Why does EastGIB make this bid with his balanced 12HCP?
The explanation of 3♦ is "4+C; 10-12 total points; forcing to 3N". So, it says absolutely nothing that had not been said with the 2♥ bid? Diamond stopper, maybe?

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