in case all of you were perplexed and confused and researching, the tex bar referred to was the hoadley's tex bar and bears no resemblance to the later (in oz) nestle tex bar which was an imported american piece of rubbish more closely related to an aero type of bar.
Hoadley's was a melbourne company. They then merged with pommy rowntrees to become rowntree-hoadley, Eventually they sold out to nestle who dropped many hoadley originalls including the original hoadley tex bar known (quite rightly) as the "king of chocolate bars".
so put that in ya pipe and smoke it