digraph Flow {
  edge [fontname="helvetica",fontsize="10pt"];
  node [shape=ellipse,fontname="helvetica",fontsize="10pt"];
  analyze;
  analzindexer;
  analzsearch [label="analzsearch.cgi"];
  browser [label="HTML page\nin browser"];
  node [shape=note];
  searchdata [label="searchdata.xml"];
  searchindex [label="analzsearch.db"];

  analyze -> searchdata [label=" writes"];
  searchdata -> analzindexer [label=" reads"];
  analzindexer -> searchindex [label=" writes"];
  searchindex -> analzsearch [label=" reads"];
  analzsearch -> browser [label=" get results "];
  browser -> analzsearch [label=" query "];
}
