The system 2, wherein {HEAD ~ the means} for adjusting the local evaporation power comprises a light pen and {TAIL ~ means} operatively associating it with each bar of the local evaporation power and each respective vapor source for controlling the former in dependence upon the movement of the light pen relative to the bar 
comprises
The system 2 , wherein { HEAD ~ the means } for adjusting the local evaporation power comprises a light pen and { TAIL ~ means } operatively associating it with each bar of the local evaporation power and each respective vapor source for controlling the former in dependence upon the movement of the light pen relative to the bar
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH