digraph G
{
  edge [fontname="FreeSans",fontsize="10",labelfontname="FreeSans",labelfontsize="10"];
  node [fontname="FreeSans",fontsize="10",shape=record];
  Node1 [label="RNA",height=0.2,width=0.4,color="black", fillcolor="grey75", style="filled" fontcolor="black"];
  Node2 -> Node1 [dir=back,color="midnightblue",fontsize="10",style="solid",fontname="FreeSans"];
  Node2 [label="Thermodynamics",height=0.2,width=0.4,color="black", fillcolor="white", style="filled",URL="$class_thermodynamics.html",tooltip="Thermodynamics Class."];
}
