使用用户组修改ACL记录类型上的所有action的控制权限，如图14所示。
Modify access control of all actions on the ACL record type with user groups, as shown in Figure 14.
这显示了只有在“ SuperAdmin ”组中的成员可以对ACL记录类型操作。
This shows that only members in the "SuperAdmin" group can operate on the ACL record type.
一组经过变更的SDO还会维护一条其原始值的记录，从而支持某种类型的乐观性锁定算法。
A collection of SDOs that has been altered also maintains a record of its original values, enabling certain sorts of optimistic locking algorithms.
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