(n.) 1. A variation on the Year 2000 prob- lem in computer systems that have two-digit years in date fields and are used by companies and organizations in which the fiscal year 2000 begins before the end of calen- dar year 1999. These computer systems may interpret the fiscal year as the year 1900. 2. A potential problem, if not corrected, with date fields in older code that were (some- times) used to hold values with special meaning. For example, the date 9/9/99 was often used as an expiration date meaning “keep this information forever” or, worse, “destroy this document immediately.”