|  | UNOA | 
            
              | UN/ECE level A |  
              | As defined in the basic code table of ISO 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 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 : Information technology - Part 1: Latin alphabet No. 1. |  | 
        
          |  | UNOD | 
            
              | UN/ECE level D |  
              | As defined in ISO/IEC 8859-2 : Information technology - Part 2: Latin alphabet No. 2. |  | 
        
          |  | UNOE | 
            
              | UN/ECE level E |  
              | As defined in ISO/IEC 8859-5 : Information technology - Part 5: Latin/Cyrillic alphabet. |  | 
        
          |  | UNOF | 
            
              | UN/ECE level F |  
              | As defined in ISO 8859-7 : Information processing - Part 7: Latin/Greek alphabet. |  |