NISAN system has been developed by a group of Japanese statisticians, since 1978. The package is widely applicable in statistical data analyses, confirmatory and exploratory, with newly developed methods. The system is useful not only for the beginners in data analysis, but also for the senior statisticians with analytical insight, i.e. choosing adequate procedure of statistical analysis and model-building. In the presest paper, some features in NISAN system recently developed are presented, especially concentrating on both functions of new monitor and knowledge-commands. These two functions are mainly for statistical researchers. The former is easy to cooperate and to accumulate further commands developed with respect to data handling and analytical methods by NISAN research members, working in the respective fields of statistics and locating in several parts of Japan. The latter is to investigate and to evaluate properties of statistical methodologies by simulations in some varieties of circumstances given, and jointly may be to recognize the mathematical model previously unspecified for data.