ps-postscript-code-directory
ps-postscript-code-directory is a variable defined in `ps-print.el
'.
Its value is "/usr/local/share/emacs/25.0.50/etc/"Documentation: Directory where it's located the PostScript prologue file used by ps-print. By default, this directory is the same as in the variable `data-directory'. You can customize this variable. This variable was introduced, or its default value was changed, in version 20 of Emacs.