Parse IETF RFC Text Documents to extract ABNF rules.
There is more documentation within the comments of the script.
if not value? 'script-manager [ script-manager: func ['word /local needs][ if any [ :word <> 'do-needs none? in system/script/header 'needs none? needs: system/script/header/needs ][return] if not parse needs: compose [(:needs)] [some file!][make error! {Expected a NEEDS block consisting of file!.}] foreach [file] needs [do file] ] ]
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