Where multiple claimants bring proceedings together and one partially succeeds while the other fails, the unsuccessful claimant's liability for the defendants' costs should be limited to the proportion attributable to her claim, not the entirety of the defendants' costs. The trial judge's assessment of that proportion (here 20%) will not be disturbed on appeal absent substantive challenge. Correction of an accidental omission from a costs order falls within UCPR r 36.17 and does not constitute deciding an undecided controversy.
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