It's not even really a macro in Australia. You mark the candidates in order 1 to however many if you want. If you want you can just put a single 1 for just one candidate and then that candidate's preferences are given to the remainder in their order.

The Senate is a whole other world. There's something like 200 or 300 names which you number in order from 1 to however many. Same deal though - you can put a single 1 in.

Also the candidates hand out how to vote cards as you walk in to tell you how they want you to vote.