Vertical vs horizontal : Correct me is I am right. Guil incorrectly refers to his vertical as horizontal & vice versa.

yes thats right. horizontal goes from left to right, vertical goes up and down. I watched a bit of the video and he seemed to be using the terms correctly. Can you post a specific time at the video that you noticed this at?

If I am called upon to draw an x, y axis on a blackboard, the x axis is drawn from east to west, and the y-axis is drawn north to south. When the sun rises across the horizon doesn't it rise vertically? At 3:59 in the video, for example, Guil calls the first position the horizontal at 75%, referenced from the sides, the sides are on the vertical axis, and then the second position, the vertical, is left blank and as a consequence defaults to 50%, referenced from the top and bottom or centred on the horizontal axis. Maybe it's semantics, but it does manage to confuse me.

Andrew, you are correct. They key word is along the horizontal axis. In the video the reference is to the sides, which are vertical. I am overthinking it. Thank you for clearing this up. I thought for a minute that I didn't know my left from right and horizontal from my vertical. Sometimes these reference points are confused based on whose right or left we are talking about. My right is your left when we are facing one another. I'm newish to this and I don't want to miss a thing, but it is little things like this that makes me question myself and that is not helpful. Mostly though, I learn best when things are intuitive. Thank you to all who helped me out here today. Sincerely and respectfully.