A question to installers re: "d" point...

[cooterteef]

ok,
So i'm doing my homework while I wait for my X-ecuter 2 lite to come in. I think the most of it will be cakewalk. Question is on the d0 point, i've seen some sites say you need to scratch it to get to the copper, others don't. is it an actual hole and if so why can't you just put the wire into it? used to do this with series 9xxx playstation 1's.

any links to usefuls sites would be asppreciated.
Coot