A filled field is designed for text which is to be broken at word boundaries but could be of arbitrary length. Here such text is specified by initial carat:
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^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$text
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^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$text
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^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$text
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.
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where number of <'s plus one is maximum size of field on each line
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Note how one can repeat input variable so that Perl will process $text in above example over three input lines. Characters output on one line are discarded and remaining part (of $text) passed to next line
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The special ~~ construct
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~~ ^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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$text
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.
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will repeat pictureline following ~~ until associated variable (here $text) is exhausted
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