[MEGOLDVA] <sp>?

hali!

214-The following commands are recognized (* =>'s unimplemented):
CWD XCWD CDUP XCUP SMNT* QUIT PORT PASV
EPRT EPSV ALLO* RNFR RNTO DELE MDTM RMD
XRMD MKD XMKD PWD XPWD SIZE SYST HELP
NOOP FEAT OPTS AUTH CCC* CONF* ENC* MIC*
PBSZ PROT TYPE STRU MODE RETR STOR STOU
APPE REST ABOR USER PASS ACCT* REIN* LIST
$ help user
214 Syntax: USER username
$ help pass
214 Syntax: PASS password

valaki tudna segíteni, hogy mit jelent ez az ? google nem veszi be a speciális karaktereket:)