> What do you think about my idea of moving the line to the bottom instead?
bad idea. to be honest i don't think the precise semantics of the scroll distance are very important, but it is important that left and right buttons are near inverses of each other, which means that when scrolling down, you can easily get back to the last view you saw without moving the mouse at all. the only change i think i'd make is that perhaps a right click should move the text just *below* the mouse position to the top. that way there wouldn't be a line's worth of "zero-movement" vertical space at the top of the window - which is particularly noticeable when the window is only a couple of lines long - in which case half the scrollbar doesn't react at all to left or right buttons currently. i'd implement this, but UI changes are controversial.
