B-14 defines all your rebids through 3NT except for 3OM, which is not mentioned.
Combining the descriptions of 2OM and 3D/3M yields, "Natural. At least 5 cards in M; game-force; emphasis on honors in the suit of the jump."
A. Is this a reasonable use?
B. Other suggestions? (KSU doesn't use many splinters, but if this were one it would show long C and a void, right?)
C. If A = yes, does 3H look more helpful than 2H on this hand?
S
P
O
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L
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R
[SPOILER 2]
Opener held: AQ3 J3 KQT963 A7
D. Should we always reach 6S?
E. Can we reasonably reach 6N?
F. Does RKC + specific Ks help?