hello, this seems exactly what docs says(before dive into the source):
@PDF::Labels:PageFormats is a list of known page formats.  Each
        page format is a : delimited list of fields which provide the
        following properties about a page of labels:
...

 $pdf = new PDF::Labels(
                        $PDF::Labels::PageFormats[0],
                                filename=>'labels.pdf',
                                Author=>'PDF Labelmaker',
                                Title=>'My Labels'
                );

[download]
I read TFM as follow: the first argument in object creation must be a Page Format. for your convenince there is a global variable in the class that collect an array of common formats. Even if this seems weird is a reasonable manner to do configuration.
You can also modify only the font size of one of the format in this, not so elegant, way: 
my $cust_page_format = $PDF::Labels::PageFormats[0];
my $needed_fontsize = 8;
$cust_page_format =~ s/:\d+(:\d+)$/:$needed_fontsize\1/;

[download]
L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re^2: Need help RTFM: Setting fontsize with PDF::Labels module by Discipulus
in thread Need help RTFM: Setting fontsize with PDF::Labels module by nysus

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