Hi Gaston, the 2560, 2048 in that script was just an arbitrarily decided reasonable default resolution to use for the generated pixel bitmap.
It will be the width and height for the bitmap image that will be placed on the clipboard for you to paste into an image editing program.
You can substitute some other width and height values in there if you want, but as you make it larger the amount of memory consumed by the bitmap can get to be very high and different video cards will have different kinds of limit values.
If you make it much smaller than that it will consume less memory but also there will be fewer pixels and so you'll have more "jaggies" and stair stepping in the generated image.
A width = 2560 height = 2048 bitmap is a good amount of resolution to avoid visible pixels while not being too unwieldy in size. But if does not suit your needs you can change that.
- Michael
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