Excel Accounting extends accounting abilities of Excel 97 and Excel 2000. Also, it increases a convenience of accounting in Excel due to the following causes: 1. Easy creation of the complex pivot tables. 2. Excel Accounting allows to create the following control types of the source data: - hierarchical control of all sorting columns values. You can define restrictions of values for any sorting column for defined higher sorting field value and so on. - Excel Accounting allows defining dependent columns in a source list. If you will define them, their values will become controllable. - other control types. Impermissible values are selected by red color on inserted worksheet for all cases. An error value can be searched automatically also. 3. Excel Accounting has the procedure of source data automated input that allows: - seeing the list of hierarchic restrictions for sorting column during input after entering the higher sorting field value. To enter value, you can click on it in the list; - seeing the list of main and dependent columns possible values of during the input. To enter value, you can click on it in the list; - making some other control types. 4. An ability of work with external data bases (Access, Visual FoxPro and