In {HEAD ~ such “multiple stage” machines} {TAIL ~ the additional tables} may be used in parallel, or preparatory steps may be carried out on one or more tables while one or more other tables are being used for exposure 
In { HEAD ~ such “ multiple stage ” machines } { TAIL ~ the additional tables } may be used in parallel , or preparatory steps may be carried out on one or more tables while one or more other tables are being used for exposure
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD TAIL TAIL 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