Developer Features Ease of Use - Language patterns are maintained via an intuitive, simple, rapid, point-and-click Graphical User Interface (GUI). Ease of Specification - Language patterns are specified in a non-redundant, syntax-free manner that does not require knowledge of programming language constructs or Artificial Intelligence techniques. Patterns are developed using an incremental, building-block approach. Power - Recognition constructs are provided for character-, word-, and phrase-level recognition. Related patterns (e.g. - synonyms, abbreviations, spelling variations) can be combined into logical groupings. Groupings may be homogeneous or heterogeneous. Knowledge engineers have complete control over the strictness of each pattern match. Flexibility - Knowledge engineers can combine patterns in innumerable ways, and thus may construct knowledge model designs tailored to their individual preferences. Integrated Test Environment - Language patterns can be tested incrementally as they are developed, and may be tested individually or in combination with other patterns. Thus, knowledge engineers can test atomic-level patterns, the entire knowledge base, or anywhere in between. Integrated Delivery Environment - A variety of utilities are provided that allows the knowledge engineer to optimize knowledge bases for run-time performance. Platforms Windows: NT, 2000, XP, 98.