PersistentSymbol

PersistentSymbol["name"] represents the persistent symbol associated with the key "name".

PersistentSymbol["name",loc] represents the persistent symbol associated with name stored in persistence location loc. 

PersistentSymbol["name",{loc1,…}] represents the persistent symbol associated with name at the first of the locations loci at which it occurs.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.