2
hi'
I'm not sure but it seems that countries are listed from www/class/xoopslists.php
And about default displaying, see in www/modules/oledrion/checkout.php, lines 112 to 114
$countriesList = new XoopsFormSelect(_OLEDRION_COUNTRY, 'cmd_country', $commande->getVar('cmd_country',' e'));
$countriesList->addOptionArray($countries);
$sform->addElement($countriesList, true);
I hope it helps, I have some doubts