public void showScreenDescription(String sortFieldHeader) {
    TerminalPrinter printer = getTerminalPrinter(SCREEN_DESCRIPTION_START_ROW);
    printer.startBold().print("Fields Management").stopBold().endOfLine();
    printer.print("Current Sort Field: ").startBold().print(sortFieldHeader).stopBold().endOfLine();
    printer.print("Navigate with up/down, Right selects for move then <Enter> or Left commits,")
      .endOfLine();
    printer.print("'d' or <Space> toggles display, 's' sets sort. Use 'q' or <Esc> to end!")
      .endOfLine();
  }
The screen where we can change the displayed fields, the sort key and the order of the fields.
hbase-hbtop/src/main/java/org/apache/hadoop/hbase/hbtop/screen/field/FieldScreenView.java