EMC Documentum Content Server Version 6.5 Fundamentals has a big error about ACLs on page 134.
As highlighted in the figure above, it claims that ACLs assigned to folders are not used to define access to the folder. This is an incorrect statement. All you need to do to test this statement is to create a folder, alter permissions on it so that you have an effective permission of less than DELETE and then try to delete the folder. You will see that the deletion fails. Similarly, BROWSE permission is needed to look at a folder’s attributes and to retrieve it in query results.
Apparently, the intent is to explain the special usage of ACLs assigned to folders as mentioned in the last statement in the screenshot. However, that is in addition to and not instead of the regular effects of ACLs. In addition to controlling access to the folder object, the ACL assigned to it is used for enforcing folder security (if enabled), which restricts operations on objects linked to the folder. Further, when the default ACL mode for a Content Server instance is Folder, new objects created by that instance in the folder are assigned the same ACL as the one on the folder, by default. This is also loosely referred to as inheriting ACL from folder.