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I have a 13x23 cutting board at that I am trying to engrave a large image on. I want to engrave as much of the board as possible with that image however I've having a hard time getting the board positioned in a way that I can frame it (to see what the workable area is to put my artwork into) and also to prevent any errors with centering. 

I've not had any issues with smaller workpieces, however this one is much more difficult. My artwork seems to be out of the workable area to frame and also to process, however I can't figure out where the allowable areas are so that I can adjust the artwork to meet those requirements. 

Can you also explain what changing framing xy distance as well as the z distance does as well as all of the settings in that framing pop up box?