sub print_more;   # declare a proto
my $more = 20;    # twenty lines then stop
my $wrap = 80;    # assume that we will wrap at 80 cols


print_more $some_big_string, @big_array;

{ 
  my $line_count = 0;  # declare a closure to remember lines printed
    
    sub print_more {
        my $data = join'', @_;
        my @data_lines = split "\n", $data;
        for my $line (@data_lines) {
            # add one line if less than $wrap long (no wrap)
            # or more for long lines that will wrap
            $line_count += int ((length($line))/$wrap) + 1;
            if ($line_count < $more ) {
                print $line, "\n";
            } else {
                print "[Hit Enter key to continue]";
                <STDIN>;
                $line_count = int ((length($line))/$wrap) + 1;
                print $line, "\n";               
            }
        }
    }
}