sldtoppm
Convert an AutoCAD slide file to a PPM image.
TLDR
Convert an SLD file to a PPM image
$ sldtoppm [path/to/input.sld] > [path/to/output.ppm]
Compensate for non-square pixels by scaling the width of the image
$ sldtoppm -adjust [path/to/input.sld] > [path/to/output.ppm]
