A computer software system (10) is provided. The computer software system (10) includes a compiler (12) operable to receive a worksheet definition (20) and to access a plurality of model interface functions (16). The worksheet definition (20) is named and parameterized and comprises a plurality of cell...http://www.google.se/patents/US5937155?utm_source=gb-gplus-sharePatent US5937155 - Interactive report generation system and method of operation