PermissionCode is an Integer property that identifies the Unix user permissions required to acccess an RFC-822 message part. PermissionCode is used by
TIdMessageEncoder like
TIdMessageEncoderUUE and
TIdMessageEncoderXXE, which support optional user permissions for encoding operations. PermissionCode is used by these classes to identify, in the encoded contents, the user permissions required for decoding operations only.
PermissionCode is expressed as an Integer, in the form used by the Unix user permission flags. The default value for PermissionCode is 660, as established in the Create contructor.