I've been reading about how states and statuses are defined here:
http://www.drupalcommerce.org/specification/info-hooks/order

I've also seen how the various states and statuses are defined in commerce_order.module

The goal is to add a second processing status, which I assume would look like this

$order_statuses['processing2'] = array(
'name' => 'processing2',
'title' => t('Processing2'),
'state' => 'pending',
'weight' => 6,
);

based on the normal processing status, which looks like this:

$order_statuses['processing'] = array(
'name' => 'processing',
'title' => t('Processing'),
'state' => 'pending',
'weight' => 5,
);

But where does this get defined? I surely can't go fidgeting with the commerce_order.module file.

Do I create a module that simply includes this status "definition" inside a function?

Thanks!