[bisrael]

Not to be too much of a pedant, but the phrase

> SVG has an opposite y-coordinate system (0 is on top, height() is at the bottom).

struck me as silly, since that's how the coordinate systems of nearly all computer graphics systems work, not really opposite....

[LukeShu]

Yes, but it's the opposite of math-convention, which many of us have been taught since ~6th grade.

Anyone who has done any amount of work with computer graphics knows that this is the norm; but a new programmer, or just one that hasn't worked with graphics, has 6+ years of math education telling them that the y-axis is backwards.