MetaPost is a graph file format based on the Metafont language.

The Export and GraphTheory[ExportGraph] commands can write to this format.

$\mathrm{with}\left(\mathrm{GraphTheory}\right)\:$

$\mathrm{levi}≔\mathrm{SpecialGraphs}:-\mathrm{LeviGraph}\left(\right)$

$\mathrm{levi}≔\mathrm{Graph\; 1:\; an\; undirected\; unweighted\; graph\; with\; 30\; vertices\; and\; 45\; edge(s)}$

$\mathrm{DrawGraph}\left(\mathrm{levi}\,\mathrm{style}=\mathrm{spring}\right)$

$\mathrm{file}≔\mathrm{FileTools}:-\mathrm{JoinPath}\left(\left[''levi.mp''\right]\,\mathrm{base}=\mathrm{homedir}\right)$

$''/Users/JohnSmith/levi.mp''$

$\mathrm{ExportGraph}\left(\mathrm{levi}\,\mathrm{file}\,\mathrm{metapost}\right)$