NODE                     EXPLANATION
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(?-imsx:                 group, but do not capture (case-sensitive)
                         (with ^ and $ matching normally) (with . not
                         matching \n) (matching whitespace and #
                         normally):
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  ^                        the beginning of the string
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  (                        group and capture to \1:
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    .*?                      any character except \n (0 or more times
                             (matching the least amount possible))
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  )                        end of \1
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  (                        group and capture to \2:
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    (                        group and capture to \3:
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      =<                       '=<'
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    )                        end of \3
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   |                        OR
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    [<=>]                    any character of: '<', '=', '>'
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  )                        end of \2
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  (                        group and capture to \4:
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    .*                       any character except \n (0 or more times
                             (matching the most amount possible))
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  )                        end of \4
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)                        end of grouping
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