pst-hsb is a PSTricks related package for plotting lines and curves with continous colors. Only colors in the hsb modell are supported. If you have one of the official TeX distribution installed, then all files are still present or can be installed by using the file manager. Otherwise save the files pst-hsb.sty|tex in a directory, which is part of your local TeX tree. Then do not forget to run texhash to update this tree. pst-hsb needs pst-plot (pstricks-add) and pstricks, which should be part of your local TeX installation, otherwise get it from a CTAN server, https://mirror.ctan.org PSTricks is PostScript Tricks, the documentation cannot be run with pdftex, use the sequence latex->dvips->ps2pdf or simply lualatex. %% This program can be redistributed and/or modified under the terms %% of the LaTeX Project Public License Distributed from CTAN archives %% in directory macros/latex/base/lppl.txt. hvoss@tug.org %% $Id: README 380 2021-12-29 15:23:25Z herbert $