what dose the command "chflags" used for ?

[Supote Leelasupphakorn]

>> Dear all,
>> 
>>    Because we have the command "chmod" for change
the
>> permissions of
>> files so what does the command "chflags" used for
and
>> what suituation 
>> I must use it ?

>chflags is used to set system flags on files you
don't want to be
>modified accidentally - most commonly the 'noschg'
flag stops a file
>from being deleted by a normal user.

>See the man page for more details, and also the -o
option to 'ls' (which
>shows flag settings for files.

but "chmod 600 <those_file> do the same thing why does
"chflags" come to play ?

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