There is another clarification that can be made. While browsers will visibly collapse multi-white-spaces, you can do a "View Source" within the browser to see the raw (unrendered) HTML. From here you will see exactly what Perl has generated. For example, this script:

#!/perl/bin/perl -w

use strict;
use CGI;

my $q = new CGI;
print $q->header();

print qq(<!--prints "Hello World" with two embedded newlines-->\n);
print qq(<b>Hello\n\nWorld</b>\n);
[download]

... will render:

Hello World

in the browser. "View Source" reveals:

<!--prints "Hello World" with two embedded newlines-->
<b>Hello

World</b>
[download]

By judiciously using newlines and HTML comments, you can document and beautify the raw HTML source so that troubleshooting is a snap.

I hope this helps.

Where do you want *them* to go today?