Relevancy of prior judgments: prior judgments are generally irrelevant unless their existence is a fact in issue or otherwise relevant. Section 37 provides that judgments, orders or decrees not specified in earlier sections are ordinarily irrelevant in evidence unless the existence of such judgment, order or decree is itself a fact in issue or is rendered relevant by another provision of the Adhiniyam; illustrations explain when a prior decree does not bind third parties and when a prior judgment may be admissible to show motive or where prior conviction is itself a fact in issue.