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10.1.2: RegEx (Patterns (| (either/or statement (ex: [a|b] will recognize…

- - - - ex: color and colou?r
  - - - ex: [a|b] will recognize both a and b
  - - - ex: a{3} = aaa
  - - - ex: a{3,5} = aaa, aaaa, or aaaaa
- - - - Sometimes may require escape characters
        
        Notated by a " \ "