ACCT=0 # accounting

BRACEPAT=0 # C-shell {...,...} expansions (note , required)

ECHOPRINT=0 # make echo equivalent to print, overrides ECHO_N

ESH=1 # emacs edit option

ESHPLUS=0 # some additional emacs features

FLOAT=0 # floating point arithmetic

FS_3D=0 # 3d file system

IODELAY=0 # tries to delay for output to drain in edit modes

JOBS=1 # job notification job control if possible

LDYNAMIC=0 # dynamic loading for builtins, requires loader lib

MULTIBYTE=0 # multibyte character handling

NEWTEST=1 # new [[...]] compound command

OLDTERMIO=0 # for systems that must support both TCGETA and TCGETS

OLDTEST=1 # old test command as built-in

POSIX=0 # on for POSIX compatibility someday

P_SUID=0 # real uid's that require -p flag for setuid/setgid

PDU=0 # Portable Distributed UNIX (Newcastle connection)

RAWONLY=0 # make viraw the only vi mode. Sometimes set automatically

RDS=0 # ~host!user expansions

SEVENBIT=0 # strip the eigth bit from characters

SUID_EXEC=1 # execute /etc/suid_exec for suid, sgid script

TIMEOUT=0 # number of seconds for shell timeout, 0 disables feature

VSH=1 # vi edit option