Dynamic Toolkit
The Flex open architecture allows you to access, augment and modify its behaviour through a layer of access functions.

The combination of Flex and Prolog (an AI programming language), results in a functional and versatile expert system development environment. Expert systems allow the knowledge of experts to be stored into computer programs and made available to others.

Knowledge Specification Language
Flex contains its own dedicated English-like Knowledge Specification Language (KSL) for defining rules, frames and procedures.

Flex Structures

• Frames and instances with slots for organizing objects
• Default and current values for storing data
• Demons and constraints for adding functionality to slot values
• Rules and relations for expressing knowledge and expertise
• Functions and actions for defining imperative processes
• Questions and answers for end-user interaction

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