To learn when to open the valves, to close the doors, to actuate fires...-
The non-profit-making association Pragma-Sof lodges didactic pages "house" which have quite beautiful pace and present the operations clearly and simplicity. And you make the experiment of the actions be set up in their logical unfolding. If not, that does not go!
The Simulation of lock in is an excellent example: towards upstream and downstream, when to open the valves, to close the doors, to actuate fires...
Other didactic notebooks available.