The constant values for the attributes are exported by default.
GetAttributes (filename, \$atts)
Returns the attribute settings
for file filename and saves them as the
variable referenced by
$atts, which will
contain an ORed combination of one or more of the following values:
SetAttributes (filename, atts)
Sets the attributes for the file
filename to the values contained in
atts. The attributes are given as an ORed
combination of one or more of the attribute values shown above.