docs: public AppHelper printActualUsage()
      {
          System.out.println("-------------------------------------------------------------------------------------");
          int maxLength = 24;
          for(Argument a : Arguments)
              if (maxLength < a.Name.length())
                  maxLength = a.Name.length();
          for(Argument a : Arguments)
          {
              String template = "%1$" + String.valueOf(maxLength-1) + "s : ";
              System.out.printf(template, a.Name);
              System.out.println(a.Value);
          }
          System.out.println("-------------------------------------------------------------------------------------");
          return this;
      }