Where this article allocates a risk or a burden as between the Parties "unless otherwise agreed", the agreement may not only shift the allocation but may also divide the risk or burden.

Oklahoma Code Comment

There are no previous Oklahoma decisions which have stated this rule, but it is a well recognized principle. See Garrison Coal Co. v. Semple, 82 Okl. 60, 198 P. 497 (1921); E. M. Brash Cigar Co. v. Wilson, 32 Okl. 153, 121 P. 223 (1911).

Laws 1961, SB 36, p. 79, §