Sandbox/Graphviz
< Sandbox
https://www.mediawiki.org/wiki/Extension:GraphViz
Example 1
<graphviz border='frame' format='png' caption='Graph for example no. 1'>
digraph example1 {Hello->World1}
</graphviz>
Example 2
<graphviz border='frame' format='png' caption='Graph for example no. 2'> digraph example2 {Hello->World2} </graphviz>