supply

[kirk1227]

I was going over advanced supply in the rule book and came across this sentence on Page 161 next to the bullet for Rail Supply, " A brigade is in Rail Supply whenever it can trace a path along railroad lines to a province no more than 2 provinces away that is controlled by the player, so long as no enemy units are in Rail Supply does not extend from or through provinces that are in Unrest." I dont believe the part of the sentence after the comma is grammatically correct. More importantly, what is the meaning after the comma? Thanks kirk