So many of theses orange recipes require a segmented orange. I think that this is the simplest and neatest way of doing it.
1. Using a sharp knife, cut both ends off the orange.
2. Then cut downwards to peel the orange in sections, removing the rind and the pith.
3. Segment the orange by slicing between the membrane and the flesh.
If you are also going to need the rind, scrape this off first before cutting the orange.