To anyone playing Resident Evil Outbreak: Do you know what '???' is under 'Scenario' in the title screen? How do you unlock it?

[Torgo]

<div style='font: 9pt Arial; text-align: left; '>To anyone playing Resident Evil Outbreak: Do you know what '???' is under 'Scenario' in the title screen? How do you unlock it?</div>

[Eric]

<div style='font: 11pt ; text-align: left; '>Playing the Scenarios unlocks everything, offline or online, doesn't matter.</div>

[Torgo]

<div style='font: 9pt Arial; text-align: left; '>I know, but I was just wondering if anyone knew exactly what secret those question marks represent? New scenarios? New Modes? I checked Gamefaqs, but I can't find anything that refers to those question marks in particular.</div>