Support Two fields for attachment?

[Robert9]

// xf_attachment_data
$sm->alterTable('xf_attachment_data', function(Alter $table)
{
$table->addColumn('xfa_do', 'int')->setDefault(0);
$table->addColumn('xfa_url', 'varchar', 250)->setDefault('');
});


Can you tell me which add-ons use these fields?
If I don't use these add-ons, I have two fields in my table that I do not need.

 

[Clement]

I think it's an add-on of @Fred but can't recall which.

 

[Fred]

Hi
Maybe an older version of cover addon ?

 

[Clement]

Oh yes, that does ring a bell.

 

[Fred]

Or maybe Slider

 

[Robert9]

But why these fields are in a core-addon used by other addons, but not used by all other addons that needs the core-addon?!

 

[Clement]

Because I think we put it there because we thought we would be having them used in different add-ons.