This directory containts routines that generate print or film calibration test charts, based on perceptually evenly distributed, random sequence points, suitable for reading using an Xrite DTP51 coloromiter or Xrite DTP41 spectromter (print) or Gretag Spectrolino (film). The generated print file is a PostScript file, while the film recorder file is a TIFF file. targen Is used to generate the test point values. target Is used to generate a PostScript file from those values.