The Witnesses went to work and came up with a system linking these two units and other custom - made devices , so that it is possible to print , stack , trim , and package the magazines in one operation .. This sentence is hard to understand. A simpler version with equivalent meaning is the following:
So the Witnesses got to work and devised a system to link these two and other custom-made devices . Thanks to this , a single operation is now sufficient to print , stack , trim and package periodicals .