In the ports line, a number indicates that the specified vlan includes the port with that number. If the number is followed by a "t" or "*" then packets going out on that port are tagged.
Can anyone confirm that this is not strictly correct?
My understanding is that only "t" indicates that packets are tagged, and that "*" only indicates PVID as per the next section:
5 is generally the CPU or 'internal' port. If the number is followed by a "u" or not followed by anything the tag (e.g. vlan1) is removed when the packet goes out from that port. "*" also means that this vlan is the default vlan, so that a packet which is not tagged will be associated with this vlan.
This means that "3u", "3*" and "3u*" are meaningful with the latter two having the additional meaning that the PVID of port 3 is assigned this VLAN.