category: Graphics requires: bash lua lua-gv perl_base php ruby ruby-gv tcl tcl-tcldot sdesc: "Graph visualization tools (sample scripts)" ldesc: "The Graphviz layout programs take descriptions of graphs in a simple text language, and make diagrams in several useful formats such as images and SVG for web pages, Postscript for inclusion in PDF or other documents; or display in an interactive graph browser." external-source: graphviz notes: perl5_030