How can I tell if foreclosure is first position?

[Guillermo Oyola]

Florida is one of the top states getting hit hard with foreclosures. I know you should only bid on first position mortgages that are being foreclosed. How can I tell if that's the case? 

Final Judgement says: 

"Plaintiff holds a lien for the total sum set forth in paragraph one superior to any claim or estate of Defendants, and all those claiming by, through, or under any of the Defendants, on the real property in....."

Does that mean its first position? All other loans or liens gets wiped with the sale? Superior to any claims ? 
Thanks