digraph "summary" {
  "ui"                                               -> "java.desktop (java.desktop)";
  "ui"                                               -> "logic";
  "ui"                                               -> "model";
  "logic"                                            -> "data";
  "logic"                                            -> "model";
  "app"                                              -> "logic";
  "app"                                              -> "ui";
  "model"                                            -> "java.xml (java.xml)";
  "data"                                             -> "java.sql (java.sql)";
  "data"                                             -> "model";
  "api"                                              -> "data";
  "api"                                              -> "logic";
}