The QPN-Tool as described in [4] has been modified to allow the specification of HQPNs and their analysis using the efficient technique mentioned in the former section. In the following we describe features of QPN-Tool emphasizing the newly integrated ones.
QPN-Tool is implemented in C and is executable on Sparc-machines with Sunview or OpenWindows under Solaris 1. It contains a graphical user interface and a variety of analysis algorithms for qualitative and quantitative analysis of HQPNs. Figure 4 describes the modular structure of QPN-Tool.
