Hi,
in Demo mode Mach3 will load, display and run 500 lines of code. When licenced it will load, display and run up to 10,000,000 lines.
I regularly run PCB isolation routing files of 100,000 lines and don't recall the last time I had a job of less than 500 lines.
I now use Mach4. When Mach4 is in Demo mode there is no line limit but the machine will run for only six minutes before it needs to be
restarted. You could download Mach4 and use the Sim(ulator) motion controller for free and without limit. That would allow you to load and
display files of any size...all for free and without time limit.
Craig