It's very simple: If you use "Width (# passes)" with a value more than one you will have a number of passes (isolations) for the same track. If the combine is unselected the output will be a number of isolation's files equal with the number of passes. So for each pass you will get a file that can be translated into gcode. If the "combine" option is selected, all the passes will be in only one file. This file can then be translated into Gcode.
Thanks Marius. Let me confirm my understanding that what you are saying that if have a multiple traces (width) files but if select Combine option then they all will be generated in a single files than multiples? Regards,
I have a question: why don't you play a bit with the software and see for yourself what is the outcome? Load a Gerber, set the “Width (# passes)” value to 3, set "Pass overlap" to let's say 0.2 and generate Geometry with or without "Combine". See the difference.