ADMIN - Server Administrator (flag s)
COST - Flood Cost of Specific Commands
HELPER - Helper (flag h)
IRCOP - Operator (flag g)
NONE - Disable command
OPEN - Set command back to default.
SA - Services Administrator (flag a)

This command allows you to customize the access level for server commands. If you set the access level to NONE then the command is no longer allowed on your server. OPEN allows anyone to use the command. This way you can customize the responsibilities and privileges that go with different levels of access as you see fit. You can restrict a command more than its default but opening a command may not always allow users to execute the command.

Examples:
/as help privilege <topic>

A few commands are locked because altering them is a very bad idea. For example, if you could set the privilege for oper to anything other than open then no one would be able to oper to get his or her privileges. The default privileges for each command are designed to be generally practical, but since different networks will work in different ways you may well prefer to limit some commands. Be very cautious when making a command more open though. Most commands currently restricted to operators are restricted because they can be abused if they are open.