What is the difference between JAL and JALV2

The orignal jal (Also named Jal 0.4x) was built by Wouter van Ooijen. See his jal website at http://www.voti.nl/jal/

Jalv2 is a complete re-rewrite of the orignal jal. It can be found at http://www.casadeyork.com/jalv2/