Georeferencing of raster images in plain AutoCAD. GeoRefImg is a LISP utility which automatically repositions raster images used in a drawing to the position defined in the images' World files. World files define geo-position and other parameters of a raster image (TIF, CIT, JPG, PNG, GIF, BMP, ECW, SID...). For AutoCAD 2013, 2012, 2011, 2010.