Here is a list of the parameters applicable to the SYSTEM control statement:
SYSTEM parameters
ACB
OUTPUTEXIT
ALLUSERS
PANELID
ATTR
PASSTRY
AUDITOGDG
PREFLANGUAGE
BINDTIMEOUT
RCMDTIMEOUT
CLOSEACBINACT
RETRCMDS
CV64
RFUNTIMEOUT
DATEFORMAT
RTMT1
DEFAPPL
RTMT2
DEFMENU
SCREENMODE
DEFPROFILE
SECURITY
DLOGLIMIT
SESACB
DOMAX
SHAREAPPL
DUMPGDG
SIGNON
EXITWALEN
SIGNONPANEL
GENERICACB
SRBUFSIZE
GENRESNAME
STANDBY
HARDENUSER
SYSDUMP
INITIAL_CMD
SYSPLEXGROUP
INPUTEXIT
SYSPLEXTYPE
INQINTERVAL
TCP
LOCALNODE
TN3270E
LOGCMDAUTH
TN3270E_CONNECT
LOGMNNX
TRBUFSIZE
MSGSUFFIX
TRNUMBER
MULTUSER
VERBOSE
OLA_DEFER_USERS
WORKQUE
OLALOG
XLATECP
OPEROLACLASS
Note: See also Common end-user parameters for Systemwide Defaults for enduser options, and Common session parameters for Systemwide Defaults for Session Definitions.