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The following information is provided as is, and the authors take no responsibility for the correctness.
HP RTL is Hewlett-Packard’s Raster Transfer Language. It is a language that is understood by various plotters and printers, and is used to produce plotted or printed output from those devices. HP RTL is similar to Hewlett-Packard’s PCL printer language; many of its commands are the same as those of PCL, though some are different, and you should be aware of these differences if you are already familiar with PCL.
For more information see PCL - HP Page Description Language.
All text is available under the terms of the GNU Free Documentation License (see Copyrights for details). Disclaimers