The FISPACT keyword is the divider that separates the library input from the initial conditions and irradiation sequence details. It is the action keyword that triggers the execution of the queued actions from the library data preparation section of the input file. The keyword reads a 72 character title (beginning with *) containing information about the particular simulation. This title is also used to label the graphs and will appear in output files.
< -- Control phase -- > PROJECTILE 3 GETXS 0 GETDECY 0 FISPACT * Proton beam irradiation < -- Initial phase -- > ... < -- Inventory phase -- > ...