This section describes an example of how the Ramtek REF subpackage can be used to produce a gray scale "image". An example of the output image produced by first running the example program REFTEST, outputing the result to a REF file, then using the program REFLAS to produce a gray scale image on the QMS laser printer. A listing of the REFTEST program is also provided. Note that REFTEST must be linked to the REF version of the library (LONGLIBR) rather than the "normal" version. Also note that REFTEST, when linked to the "normal" LONGLIB, will produce a color image on the Ramtek display.