option nodynamic
bigdecimal
curses
dbm
digest
digest/md5
digest/rmd160
digest/sha1
digest/sha2
dl
etc
fcntl
gdbm
iconv
nkf
pty
racc/parse
readline
sdbm
socket
stringio
strscan
syck
syslog
#tcltklib
#tk
zlib