Feel free to skip this section if you know what states and transitions are.
Some typical examples are:An article status (concerning its publication): draft => ready to be moderated => published An order status (money, money): previewed => address selected => payment details entered => paid => packed => delivered
A status (or state) is finite, in other words, there can be only one ; an article status is either "draft, "ready to be moderated" or "published" at any point in time ( xor would be more accurate but I don't fully assume my nerdiness ! ). Going from one state to another is what we like to call a transition to sound fancy. "publish" is a transition going from the "ready to be moderated" state to the "published" state.
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