LOMETS generation of template proteins for I-TASSER

While trying to interpret and analyze the results of sequences I have submitted, I have had some trouble understanding how LOMETS is used to find template proteins from PDB.

How does LOMETS interact with PDB to retrieve proteins of similar folds?

I understand you all must be very busy, and I am so appreciative of your time. If there is a resource that answers my question, I would greatly appreciate that, or if you have the time to answer my question in depth, I would also be extremely thankful.

Thank you kindly,
Patrick