I found this piece of code in a customization:
The thing is I have no idea what the 'no_opps' preference is and couldn't find any documentation about it.
You can also find this piece of code in /modules/Users/Save.php:
$focus->setPreference('no_opps',$_POST['no_opps'], 0, 'global');
$focus->setPreference('no_opps','off', 0, 'global');
Does anyone have any idea about the meaning of this variable?