digraph inheritance
{
  Node18 [shape="box",label="channels.h",fontsize=10,height=0.2,width=0.4,fontname="Helvetica",color="black",style="filled" fontcolor="white"];
  Node19 -> Node18 [color="midnightblue",fontsize=10,style="solid",fontname="Helvetica"];
  Node19 [shape="box",label="users.cpp",fontsize=10,height=0.2,width=0.4,fontname="Helvetica",color="black",URL="$users_8cpp.html"];
  Node20 -> Node18 [color="midnightblue",fontsize=10,style="solid",fontname="Helvetica"];
  Node20 [shape="box",label="users.h",fontsize=10,height=0.2,width=0.4,fontname="Helvetica",color="black",URL="$users_8h.html"];
  Node19 -> Node20 [color="midnightblue",fontsize=10,style="solid",fontname="Helvetica"];
}