4. Legend

4.1. Control Characters

   NUL Null                                DLE Data Link Escape (CC)

   SOH Start of Heading (CC)               DC1 Device Control 1

   STX Start of Text (CC)                  DC2 Device Control 2

   ETX End of Text (CC)                    DC3 Device Control 3

   EOT End of Transmission (CC)            DC4 Device Control 4 (Stop)

   ENQ Enquiry (CC)                        NAK Negative Acknowledge (CC)

   ACK Acknowledge (CC)                    SYN Synchronous Idle (CC)

   BEL Bell (audible or                    ETB End of Transmission
       attention signal)                       Block (CC)

   BS Backspace (FE)                       CAN Cancel

   HT Horizontal Tabulation                EM End of Medium
      (punched card skip) (FE)

   LF Line Feed (FE)                       SUB Substitute

   VT Vertical Tabulation (FE)             ESC Escape

   FF Form Feed (FE)                       FS File Separator IS)

   CR Carriage Return (FE)                 GS Group Separator (IS)

   SO Shift Out                            RS Record Separator (IS)

   SI Shift In                             US Unit Separator (IS)

                                           DEL Delete [1]

   ________
   NOTE: (CC) Communication Control
         (FE) Format Effector
         (IS) Information Separator
   [1] In the strict sense, DEL is not a control character.  (See 5.2)

4.2. Graphic Characters

   Column/Row  Symbol      Name

   2/0         SP          Space (Normally Non-Printing)
   2/1         !           Exclamation Point
   2/2         "           Quotation Marks (Diaeresis [2])
   2/3         #           Number Sign [3,4]
   2/4         $           Dollar Sign
   2/5         %           Percent
   2/6         &           Ampersand
   2/7         '           Apostrophe (Closing Single Quotation Mark
                           Acute Accent [2])
   2/8         (           Opening Parenthesis
   2/9         )           Closing Parenthesis
   2/10        *           Asterisk
   2/11        +           Plus
   2/12        ,           Comma (Cedilla [2])
   2/13        -           Hyphen (Minus)
   2/14        .           Period (Decimal Point)
   2/15        /           Slant
   3/10        :           Colon
   3/11        ;           Semicolon
   3/12        <           Less Than
   3/13        =           Equals
   3/14        >           Greater Than
   3/15        ?           Question Mark
   4/0         @           Commercial At [3]
   5/11        [           Opening Bracket [3]
   5/12       \            Reverse Slant [3]
   5/13        ]           Closing Bracket [3]
   5/14        ^           Circumflex [2,3]
   5/15        _           Underline
   6/0         `           Grave Accent [2,3] (Opening Single Quotation
                                   Mark)
   7/11        {           Opening Brace [3]
   7/12        |           Vertical Line [3]
   7/13        }           Closing Brace [3]
   7/14        ~           Overline [3] (Tilde [2]; General Accent [2])

   ________
      2 The use of the symbols in 2/2, 2/7, 2/12, 5/14, /6/0, and 7/14
   as diacritical marks is described in Appendix A, A5.2
      3 These characters should not be used in international interchange
   without determining that there is agreement between sender and
   recipient.  (See Appendix B4.)
      4 In applications where there is no requirement for the symbol #,
   the symbol (Pounds Sterling) may be used in position 2/3.