> icacls Music
The older cacls tool is the only choice on Windows XP [although you can copy
icacls.exe from Server 2003]. cacls does not know about some ACL modes, but displays most of them fine.
> cacls Music
In both outputs,
(OI) means "object inherit" (files will inherit this ACE),
(CI) is "container inherit" (containers – i.e. folders – will inherit this ACE),
(IO) is "inherit only".
Microsoft also used to provide an xcacls tool separately, but its functionality is now part of icacls.