LEDs' pupose and operation

[wiyh12nf89x]

Hello. The board's LED operation is unclear to me, so I made a list of questions:

1. The ethernet port indication LEDs are connected to A5 and B13 pins. Are they now functional?
2. The official Omega Ethernet Expansion Board doesn't have port indication LEDs so do they work out-of-the-box as soon as Omega2 finds ethernet signals on pins B9..B12 or do you have to switch them manually by e. g. ifupdown scripts?
3. Is the connection transfer rate indication implemented (10/100Mbps)?
4. Is the data transmission indication implemented? Is it constant-frequency or the blinking frequency depend on current data transmission rate?
5. Is the posistion these LEDs them somehow hardcoded or it can be changed? E. g. if I develop my own design, can i move them to another pins?
6. What is the purpose of D4 (A5 pin) and D6 (B13 pin) LEDs?