Market goes electronic step by step:
1. ZX (Bonds/Notes side-by-side elctronic & pit, CBOT)
2. QM, QG (e-miNY, NYMEX)
3. YG, YI, YE (Mini-Sized, CBOT)
4. ZX (Ag side-by-side electronic & pit, CBOT)
BTW, step #4 was Jan 02, 2004 (ZC, ZS, ZW, ZL, ZM, ZR, ZO).