Indeed, X-ray, and I'd forgotten about that when I posted earlier.
Although maybe they're not compulsory in Liverpool. We're not compulsory in Fife, because T2 is applicable to trips going outside Fife (don't ask

), so we need to be able to select T2 at any time.
Although I'm guessing that the vast majority of meters in Fife are calender-capable.
I'm sure mine isn't, though, and still has to be manually reprogrammed rather than just plugging the software in.
(So it's a good job I'm quite friendly with the Digitax agent, and he's a good bloke, so doesn't charge me extra, and he's quite cheap compared to most of them anyway. But I usually slip him an extra few quid...).
And the reason I know my meter isn't calender-capable is because said Digitax agent sold it to me for £10 about 20 years ago
He's based in Dundee, and when the council there specified calender meters there were a few older-style meters surplus to requirements.
And I've still got one of them - £10 for a meter I've been using for 20 years was a steal
