Yeah of course.
Look. The ACL security model allows to set the privileges to do some actions. So When i set to read a file i would like to do only this...read the file, buy doesn't download it.
So I have to know how to do this, separate both read and download.
Why? because I need that an admin user allows to a member to download a file that he needed.
This is the process i want to do.
A user begins to search a file in the directory
specified to him.
When the user finds the file, the new action: i need is "Request this file"
When the user has requested this file an admin user, this admin user allows to that member to download the file. How? changing the ACL model security.