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     Upon startup, perl looks for your script in one of the  fol-
     lowing places:

     1.  Specified line by line via -e switches  on  the  command
         line.

     2.  Contained in the file specified by the first filename on
         the  command line.  (Note that systems supporting the #!
         notation invoke interpreters this way.)

     3.  Passed in implicitly  via  standard  input.   This  only
         works  if there are no filename arguments--to pass argu-
         ments to a stdin script you must explicitly specify a  -
         for the script name.

     After locating your script, perl compiles it to an  internal
     form.   If  the  script is syntactically correct, it is exe-
     cuted.

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