A simple script that puts a number of Wingding characters

By default it draws first 300 Wingding characters/arrow codes, which is about all of them I think (they start repeating at some point).

Tooltip (the little pop-up on hovering mouse pointer over the arrow) shows arrow code.

Script intended to visualize all possible looks for arrow indicator plots for an easier choice, it doesn’t have indicating/advising/trading purpose by itself.

//+------------------------------------------------------------------+
//|                                                      Стрелки.mq5 |
//+------------------------------------------------------------------+

#property copyright "Copyright 2017, МегаКурец Software Corp."

#property script_show_inputs

   input int ПървиНомер = 1;
   input int ПоследенНомер = 300;
   input color Цвят = clrGreen;
   input int Размер = 5;
   
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+

void OnStart()
  {
   datetime Време = TimeCurrent();
   MqlTick дъ_ласт_тик;
   SymbolInfoTick(NULL,дъ_ласт_тик);
   double Цена = дъ_ласт_тик.bid;
   for (int хой = ПървиНомер; хой <=ПоследенНомер; хой++)
     {
      ObjectDelete(0,"Стрелка №"+IntegerToString(хой));
     }
   for (int кор = ПървиНомер; кор <=ПоследенНомер; кор++)
     {
      ObjectCreate(0,"Стрелка №"+IntegerToString(кор),OBJ_ARROW,0,Време,(Цена-0.00025*ПоследенНомер+0.0005*кор*Цена));
      ObjectSetInteger(0,"Стрелка №"+IntegerToString(кор),OBJPROP_ARROWCODE,кор);
      ObjectSetInteger(0,"Стрелка №"+IntegerToString(кор),OBJPROP_COLOR,Цвят);
      ObjectSetInteger(0,"Стрелка №"+IntegerToString(кор),OBJPROP_WIDTH,Размер);
     }   
  }
  
//+------------------------------------------------------------------+

Clearing script:

//+------------------------------------------------------------------+
//|                                           Стрелки-Почистване.mq5 |
//+------------------------------------------------------------------+

#property copyright "Copyright 2017, МегаКурец Software Corp."

#property script_show_inputs

   input int ПървиНомер = 1;
   input int ПоследенНомер = 300;
   
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+

void OnStart()
  {
   for (int пръц = ПървиНомер; пръц <=ПоследенНомер; пръц++)
     {
      ObjectDelete(0,"Стрелка №"+IntegerToString(пръц));
     }
  }
  
//+------------------------------------------------------------------+

Even less than 256 - some of the codes are empty. This table is incomplete though - there are some characters before 32.

This shows them into multiple rows and columns, numbers of rows by choice, starts drawing from price on dropping (if script is dropped on the chart) or last bid (if not dropped):

There are only 256.