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sub generate_post 
{
...
        #need to restore STDOUT(!?)
        close(STDOUT);
        open(STDOUT, ">&", SAVE_OUT);

Name "main::SAVE_OUT" used only once: possible typo at ./part2.pl line
+ 332 (#1)
    (W once) Typographical errors often show up as unique variable nam
+es.
...
    %c, *c, &c, sub c{}, c(), and c (the filehandle or format) are con
+sidered
    the same; if a program uses $c only once but also uses any of the 
+others it
    will not trigger this warning.