for my $index (1 .. $numTabs) {
   ...
}

##</code><code>##

for (1 .. $numTabs) {
   ...
}

##</code><code>##

... for 1 .. $numTabs; 

##</code><code>##

$tabs = "$tabs\t";

##</code><code>##

$tabs .= "\t";

##</code><code>##

$tabs .= "\t" for 1 .. $numTabs;