Hmmm... you're totally right, and I'm not sure how I mistakenly got into that impression. To explain a bit more clearly, for some reason I always thought that Photoshop reported pixels by rows/columns, as if the top left pixel would be 1,1 because that pixel occupies the space of the first column and first row of pixels, rather than reporting by the top left alignment of its position. I was wrong! I do use Photoshop and InDesign etc. quite a bit but it's been ages since I've done pixel work. It doesn't make sense for pixels to be treated differently than any other unit of measurement, but I guess I always thought of pixels more like the rows and columns in a spreadsheet... in a spreadsheet, your top left cell is A1, not A0. Right? 
Anyway, I hope that explanation somewhat covers for my momentary senility

Anyway, I hope that explanation somewhat covers for my momentary senility
