[sdiy] clock Divider - I almost get it.. one more thing..

[Scott]

I re-read the pages on Ken's dividers and I understand most of it. (it
helps that it isn't the middle of the night, as it usually is when I'm
working on this stuff)
http://www.cgs.synth.net/modules/cgs22_master_divider.html
I was comparing it to the link that Romeo just posted, and am trying to
understand the differences.
http://www.synthdiy.com/files/2006/polydiv.gif

Why are the outputs so much more complex on the polydiv?
I guess I need a refresher on op-amps.  It looks like he is shaping the
output pulse, but why is that needed in that circuit, but not on Ken's.