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An added feature to version 0.30 is the C<$UMASK> variable, explained in
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detail below; if C<symchmod()> is called and this variable is true, then the
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function uses the (also new) C<$MASK> variable (which defaults to C<umask()>)
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behavior from what you would expect if you are used to UNIX C<chmod>.
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Symbolic modes are thoroughly described in your chmod(1) man page, but