public void init() {
    helpScreenView.hideCursor();
    helpScreenView.clearTerminal();
    helpScreenView.showHelpScreen(refreshDelay, COMMAND_DESCRIPTIONS);
    helpScreenView.refreshTerminal();
  }
The presentation logic for the help screen.
hbase-hbtop/src/main/java/org/apache/hadoop/hbase/hbtop/screen/help/HelpScreenPresenter.java