The Saga uses Easy Cut Studio software which is installed on the adjacent computer.
It is simplest to design your cut in Easy Cut using the library of shapes & fonts.
If you have a particular vector file (SVG, EPS, AI) file you want to use it can be imported into your project.
Saga 1350IP Vinyl Cutter
There appears to be a registration mark system (ARMS) reader on the plotter, but Easy Cut doesn't recognize it.