m{
   #  Word boundary.
   \b
   #  Start capture of pattern matched;
   (
     #  literal string "MODULE",
     MODULE
     # one or more space characters,
     \s+
     #  one or more A-Z letters (represented as character class),
     [A-Z]+
     #  one or more 0-9 digits,
     [0-9]+
   #  stop capture.
   )
   #  Zero or more space characters.
   \s*
   #  1-element character class, or "escaped" "(" (not start of captur
+e);
   [(] 
   #  any & everything until ...
   .+?
   #  ... literal ")".
   [)]
 }x    #  /x flag allows to expand the regex as you see above & mentio
+ned elsewhere.
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