今天提交metalink时， 发现hp-ux的9000系列有 2个选择，以前没有见过：
HP 9000 Series HP-UX BLS (Secure)
HP 9000 Series HP-UX CMW (Secure)
google了一下：
questions:
what difference between the HP platforms?
a. HP 9000 HP-UX 11.0(32 bit)
b. HP 9000 Series HP-UX BLS(Secure)
c. HP 9000 Series HP-UX CMW(Secure)
d. HP IA64 HPUNIX
e. HP Tru64 UNIX
f. HP-UX Itanium
g. HP-UX PA-RISC(64-bit)
answer:
a) 32 bit OS revision 11.00 of HP-UX
b) B Level security revision of 11.00 of HP-UX
c) C Level security revision of 11.00 of HP-UX
d and f) 64 bit OS of HP-UX running IA64 hardware
e) pre-merger compaq version of Unix
g) 64 bit version of "a)"
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