They are exchange traded options (ETO's). You purchase them like you would the normal security (ccc) except the you enter the code CCCO for the options.
Week 44 Wrap: Relatively boring week ahead of US election; HotCopper's most watched; Oz inflation at 3.5%
MKT The ASX can overlook its Telecomm small-caps. Here’s one diversified brand with an international footprint