|  | UNOA | 
            
              | UN/ECE level A |  
              | As defined in the basic code table of ISO/IEC 646 with the exceptions of lower case letters, alternative graphic character allocations and national or application-oriented graphic character allocations. |  | 
        
          |  | UNOB | 
            
              | UN/ECE level B |  
              | As defined in the basic code table of ISO/IEC 646 with the exceptions of alternative graphic character allocations and national or application-oriented graphic character allocations. |  | 
        
          |  | UNOC | 
            
              | UN/ECE level C |  
              | As defined in ISO/IEC 8859-1 (Latin alphabet No. 1) |  | 
        
          |  | UNOD | 
            
              | UN/ECE level D |  
              | As defined in ISO/IEC 8859-2 (Latin alphabet No. 2) |  | 
        
          |  | UNOE | 
            
              | UN/ECE level E |  
              | As defined in ISO/IEC 8859-5 (Latin/Cyrillic alphabet) |  | 
        
          |  | UNOF | 
            
              | UN/ECE level F |  
              | As defined in ISO/IEC 8859-7 (Latin/Greek alphabet) |  | 
        
          |  | UNOG | 
            
              | UN/ECE level G |  
              | As defined in ISO/IEC 8859-3 (Latin alphabet No. 3) |  | 
        
          |  | UNOH | 
            
              | UN/ECE level H |  
              | As defined in ISO/IEC 8859-4 (Latin alphabet No. 4) |  | 
        
          |  | UNOI | 
            
              | UN/ECE level I |  
              | As defined in ISO/IEC 8859-6 (Latin/Arabic alphabet) |  | 
        
          |  | UNOJ | 
            
              | UN/ECE level J |  
              | As defined in ISO/IEC 8859-8 (Latin/Hebrew alphabet) |  | 
        
          |  | UNOK | 
            
              | UN/ECE level K |  
              | As defined in ISO/IEC 8859-9 (Latin alphabet No. 5) |  | 
        
          |  | UNOL | 
            
              | UN/ECE level L |  
              | As defined in ISO/IEC 8859-15 (Latin alphabet No. 9) |  | 
        
          |  | UNOW | 
            
              | UN/ECE level W |  
              | ISO 10646-1 octet with code extension technique to support UTF-8 (UCS Transformation Format, 8 bit) encoding. |  | 
        
          |  | UNOX | 
            
              | UN/ECE level X |  
              | Code extension technique as defined by ISO/IEC 2022 utilizing the escape techniques in accordance with ISO/IEC 2375. |  | 
        
          |  | UNOY | 
            
              | UN/ECE level Y |  
              | ISO/IEC 10646 octet without code extension technique. |  |