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+Potrace is a utility for tracing a bitmap, which means, transforming a bitmap
+into a smooth, scalable image.  The input is a bitmap (PBM, PGM, PPM, or BMP
+format), and the default output is an encapsulated PostScript file (EPS).  A
+typical use is to create EPS files from scanned data, such as company or
+university logos, handwritten notes, etc.  The resulting image is not "jaggy"
+like a bitmap, but smooth.  It can then be rendered at any resolution.
+
+Potrace can currently produce the following output formats:  EPS, PostScript,
+PDF, SVG (scalable vector graphics), Xfig, Gimppath, and PGM (for easy
+antialiasing).
+
+Mkbitmap is a program distributed with Potrace which can be used to pre-process
+the input for better tracing behavior on greyscale and color images.
+