2.1 Lexical Structure

The input of GAP consists of sequences of the following characters.

Digits, uppercase and lowercase letters, space, tab, newline, and the special characters

    "       '       (       )       *       +       ,       _
    .       /       :       ;       <       =       >       ~
    [       \       ]       ^       _       {       }       # 

Other characters will be signalled as illegal. Inside strings and comments the full character set supported by the computer is allowed.

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