Identify Petri net that created in PIPE version 2.5rc5, 3.0, 4.2.1
[forward,backward,mark,namaplace,namatran] = readpipe()
This procedure identify Petri net that created in PIPE, consists of number of place and transition, forward dan backward incidence matrix, initial condition. This function is called by pipesimulation that is used for Petri net simulation created by PIPE.