gnuplot-3.7.1+1.2.0 is a patch package to add some enhanced functions to
gnuplot(version 3.7) and enable it to treat Japanese text.

On patched gnuplot, the following are added.

1. LaTeX like text processing on PostScript terminal.
2. Japanese text handling
3. Saving histories of command-line-editing by GNU readline library.

For more information, see /usr/local/share/doc/gnuplot+/README.plus 

WWW: http://www.yama-ga.com/gnuplot/