^fn 6 Section 312 states that the auditor may designate an amount below which misstatements need not be accumulated. Similarly, the summary of uncorrected misstatements included in or attached to the representation letter need not include such misstatements. The summary should include sufficient information to provide management with an understanding of the nature, amount, and effect of the uncorrected misstatements. Similar items may be aggregated. [Footnote added, effective for audits of financial statements for periods beginning on or after December 15, 1999, by Statement on Auditing Standards No. 89.]