Marvel disconnector cut?

Could someone post a picture of this modification and explain what it is supposed to accomplish. I keep hearing about it but have not been able to find someone to show me what it is or what it does.

Here is a link with some great pictures.
http://forums.1911forum.com/showthread.php?t=283863

- Dave

Many thanks. Nice commentary from our own Jerry Keefer too.

Thank you.. That was an early post on the subject. Bob began teaching the cut at Montgomery College, so it became vast public knowledge after that. 
The reason I advocate this, is to promote consistent feeding .
The minimum number of shots fired from lock back at 50 yards in a 2700 with the 45, in CF and 45 is 6.. And the reason most shooters reload after the first 4 rounds, at 50yards to prevent a lock back.
It's common for that first shot from lock back to be out of the group.
It takes the disconnector out of the cycling equation. The slide movement is more consistent. No resistance from the disconnector. 
There's far more to feeding than just that, but that one issue is eliminated by the cut.
Jerry

Jerry I know you do a lot to tighten up headspace and relieve extractor side load. Does that help with the "out of group" phenomena too?  It seems that even from lock back there couldn't be too much room for inconsistent chambering the way you do them.

Jerry, is this something you would do on a 9MM build?

Dave

All 1911 pistols benefit from this.  If you look at the disconnecter rail on a Marvel conversion, it has a sloping rail to duplicate the Marvel cut on a standard 1911 slide.
Jon

This is from Bob Marvel and can be viewed on youtube.

https://youtu.be/WvVEkSNp_VE