You'd probably want to use a regular expression .. Look into perlre for more info, but this should get you started: 
my ($match) = $text =~ /^0(.+)SUBCASE/;

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Where $text is the text entered above.

In reply to Re: How can I extract the expression between two key words by the_slycer
in thread How can I extract the expression between two key words by Anonymous Monk

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