I have run into that "Four-and-a-half" marking before, thought it a bit odd (funny, actually) but did not know that it was anomalous.

Good reason to have the camera with me next time I go "shopping"!

"A day is wasted if you don't learn something new." (Sidney the Profound, aka Sidney of Wintanceastre, 986) (More on Sidney after he sobers up!)
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