Front has toe adjustment and the slightest amount of camber adjustment (say like .05 deg).
Rear has some give with the bolts - can be used to equal toe a bit or move the beam left/right. You cannot change rear toe individually. Cannot change rear camber. (refer to camber shims, can be used to fix toe upon lowering an MK4)
Some good info:
VWVortex.com - MkIV Camber plate list
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