The interactive system FLXFL has been reconstructed as a versatile tool for data analysis. The system now allows the user to carry out such step-by-step analysis as multivariate analysis, converting input data, changing the combination of variables, or making use of the intermediate result, all in an interactive mode. Another new feature is the interactive form designing facility for record output. This unique function provides flexibility in the output style without forcing laborious programming work on the user. Retaining the principle of operational simplicity, all the processes are consistently carried out based on menu-selection. The system has processed as many as 50,000 records in the past, and currently it runs at three clinical institutions. Through experience with FLXFL, it is concluded that in the medical environment the simplicity of the menu-based operation fully offsets the restrictions imposed.