In case you meant "formatting" this is the first address: Perltidy.

If you're tinkering strings together and want to improve readability, something like this is an option:

my $string = qq(Lorem ipsum kizuaheli);
my $gizmo = qq( and the crux of the biscuit is the apostrophe);
$string .= $gizmo;
[download]

Take a look at Re: What is the best way to produce a formal pdf report autonomously?. A very basic Templating System, so to speak. And certainly good enough to get a feel for it.