Postscript prologue

Each PostScript output file includes a %%Prolog section and possibly some additional user-defined sections containing, for example, character encodings. These sections are copied from a set of PostScript prologue files which are either compiled in the gnuplot executable or stored elsewhere on your computer. This behaviour and the default directory where these files live are controlled at the time gnuplot is built. However, you can control this either by defining an environment variable GNUPLOT_PS_DIR or by using the gnuplot command set loadpath. See set loadpath (p. ).