sentences:  Whereas the former SPORTIS system was only able to print non-magnetically-encoded tickets on flimsy paper rolls, AVANTIX Mobile can produce tickets both in this format and with magnetic stripe encoding on card tickets with a magnetic stripe.Paper tickets are provided in rolls of 450; card stock comes in "fan-fold" packs of 250 (however, roll-stock is no longer used as magnetically encoded card stock has become the Rail Settlement Plan standard).Magnetically encoded tickets have the advantage of being able to operate the automatic ticket gates which are used at a large number of National Rail stations throughout Britain, as well as at the majority of London Underground stations.