Advice on style

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi monks,

I'm wondering if I should put the 'require Exporter' and related statements before the 'use' statements or the other way round:

# Exporter before use
package Module1;

require Exporter;
our  @ISA = qw(Exporter);
our @EXPORT = qw(&fn1 &fn2);

use Module2;
use Module3;

# use before Exporter
package Module1;

use Module2;
use Module3;

require Exporter;
our  @ISA = qw(Exporter);
our @EXPORT = qw(&fn1 &fn2);
[download]

Is there any style that I should adopt here?

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