ACCT= 		# accounting
ACCTFILE= 	# enable per user accounting info
BRACEPAT=1	# C-shell {...,...} expansions (note , required)
CRNL=0		# accept <cr><nl> for <nl>
DYNAMIC=1	# dynamic loading for builtins, requires dlopen()
ECHOPRINT=0	# make echo equivalent to print, overrides ECHO_N
ESH=1		# emacs edit option
FS_3D=		# 3d file system
KIA=1		# shell information database generation
NAMESPACE=0	# extension to suport namespaces, not complete
NOCASE=0	# do case insensitive file matching
OLDTERMIO=0	# for systems that must support both TCGETA and TCGETS
OO=1		# partial object oriented extension, not complete
P_SUID=0	# real uid's that require -p flag for setuid/setgid
RAWONLY=0	# make viraw the only vi mode.  Sometimes set automatically
SEVENBIT=0	# strip the eigth bit from characters
SPAWN=0		# use libast spawnve() in place of fork/exec when possible
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
