Guys, pls help, what is -epsw/-dpsw from Claymore arguments?

 - Must I let the file 3main file untached with  -epsw x and -dpsw x ? Or
 - Must I put in 3main file the password declared in the pool account (suprnova) for the miner (-epsw poolaccountminerpsw and -dpsw poolaccountminerpsw) ?

Thx!