Opto-Isolator wiring

I got kinda klutsy while de-soldering U3 (opto isolator) and screwed up the board.
I need to jumper a couple of traces from the IC.
I have the wiring diagram, but don?t know where to jumper to for pins 4, 5 and 6.
Thanks for any helpful hints.

Go to digikey.com and search for 4N25. You'll find a few. Look at the pics, or download the datasheet, and it will show you the pinout. For MS2 v3.00, 4N25 pin 6 (base) is no-connect, pin 5 (collector) goes to the non-Vcc side of R13, pin 4 (emitter w/arrow) goes to ground. If you need it, I may be able to dig up a picture showing the opto-isolator chip on the MS PCB.

Thanks,
I think I was making this more complicated than it really is.
I get confused with the MS instructions giving so many options and I'm not sure what is what.
Never-the-less, I learn something every day whether I want to or not.