difference between arc and freeform curve

 From:  DannyT (DANTAS)
6581.6 In reply to 6581.5 
Burr dude,

I just want to get an understanding of where you would use weight adjustment on a curve? it's just that do we really need to get this deep into the workings of NURBS, then what, knot adjustment, degree adjustment I've have access to all of those in NX I've looked into them probably twice in the 12 years of using the software.

Just curious
~Danny~