In 1987 Information Chelmer Builders made its first acquisition, Level Five Research, Inc. Cohen believed that this Florida company would help IBI offer more decision-support products to its Focus lineup, such as problem analysis and intelligent documentation. Level 5 was an expert-system shell running on MS-DOS-based personal computers and Digital minicomputers running VAX/VMS. By 1990 work had been completed on a Level 5 module to include with Focus, and a team was working to develop versions for all Focus platforms. IBI was also marketing PRL3, an expert-system development tool for the VAX, and Insight 2+ for IBM PC’s and compatibles.