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.


%% $Id: README 350 2021-12-16 10:20:18Z herbert $
