Attribute flags set on policy statements control how code groups merge with other code groups and other policy levels.
All attribute flags are set.
The exclusive code group flag. When a code group has this flag set, only the permissions associated with that code group are granted to code belonging to the code group. At most, one code group matching a given piece of code can be set as exclusive.
The flag representing a policy statement that causes lower policy levels to not be evaluated as part of the resolve operation, effectively allowing the policy level to override lower levels.
No flags are set.