Tk::TextUndo inherits the methods from the Tk::Text widget, so you can use ->insert() to add text to the widget: 

    ...
    $te2->insert('end',  "Mean length:\t" . $stat->mean() . "\n");    
+# append line
    ...
    ...
    # $te2->see('end');    # optionally scroll to the end

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In reply to Re^13: Perl tk - How to integrate external scripts by Eliya
in thread Perl tk - How to integrate external scripts by Giorgio C

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