ATOC can't even get that document right. On page 4, they state:
They do correct that to Single in the subsequent "simplifier".
Also, if I'm reading this document correctly, on an Advance ticket, if you break your journey intending to resume the same day or if you end short, then you will save a lot of money by stating that you will be resuming your journey on a later date, as the instruction is then: "Treat as being without a ticket for the onward journey and charge the appropriate Single fare."
Single tickets
The difference between the price of the Single ticket held and price of the First Class Single ticket, available for immediate travel, for the journey being made.
Advance = difference to First Class Return plus £10 administration fee.
The difference between the price of the Single ticket held and price of the First Class Single ticket, available for immediate travel, for the journey being made.
Advance = difference to First Class Return plus £10 administration fee.
They do correct that to Single in the subsequent "simplifier".
Also, if I'm reading this document correctly, on an Advance ticket, if you break your journey intending to resume the same day or if you end short, then you will save a lot of money by stating that you will be resuming your journey on a later date, as the instruction is then: "Treat as being without a ticket for the onward journey and charge the appropriate Single fare."