Tokens

Token =
     Bracket | KeyWord |
     CharacterStringLiteral |
     WordLiteral | NumericLiteral |
     Variable.

Bracket = "(" | ")" | "{" | "\{" | "}" | "<" | ">".

A token is either a bracket, a key word, a character string literal, a word literal, a numeric literal, or a variable.

• Keywords
  
• Character Symbols
  
• Word Symbols
  
• Numeric Symbols
  
• Variables