usage tweaks
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@ -22,7 +22,8 @@ GetOptions(
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'p|pdf' => \$pdf,
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);
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if ($help) { &usage; }
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&usage if ($help);
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&usage if (!$output);
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my %to_bool = ( 0 => 'false', 1 => 'true' );
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my %vm_mode = ( 0 => 'false', 1 => 'guest', 2 => 'host' );
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