[ 源代码： gri ]
软件包：gri-pdf-doc（2.12.27-1.1~deb11u1）
PostScript manual for gri, a language for scientific graphics
Gri is a command-driven application for making x-y graphs, contour-graphs, and image graphs.
This is the Gri manual in PDF format suitable for printing or viewing on-screen. The compressed file is located at /usr/share/doc/gri/gri.pdf.gz