mandatary

1. Unstructured play time should be mandatary
   必须让孩子自由玩耍
2. After extension, new security properties of users, security label and audit mask, are added to the IA system, in order to support the mandatary access control ( MAC) and audit system under the Secure OS.
   扩展后的标识鉴别机制增加了新的用户安全属性，即安全标签和审计掩码，以增加对安全操作系统下强制存取访问控制和审计机制的支持。

noun

1. the recipient of a mandate

   Synonym:    mandatory