The transferee of a negotiable tangible document of title has a specifically enforceable right to have its transferor supply any necessary indorsement, but the transfer becomes a negotiation only as of the time the indorsement is supplied. [S13, §3138-a43, -b33; C24, 27, 31, 35, 39, § 8278, 9703, 9964; C46, 50, 54, 58, 62, §487.34, 542.43, 554.36; C66, 71, 73, 75, 77, 79, 81, §554.7506 ] 2007 Acts, ch 30, §36, 45, 46