Banjar stands for Bandwidth justification for administrator.
Actually Banjar is a nice city in west Java, an entrance to Pangandaran beach, Indonesia. My home town.
Banjar originally (and I think some of it still) specially crafted for Indonesian based networks. That's why you'll see some terminologies that might only be known in Indonesia like IIX, International bandwidth and IIX bandwidth. Hence that, on banjar v0.5 you have an option to remove IIX configurations.