Feature request: Smooth horizontal scrolling in preview

When I check kern-lists I tend to scroll through them horizontally in the preview panel at the bottom of the screen using my arrow keys. However, that scrolling becomes pretty jagged which makes the pairs harder to check. Would be cool with a feature where you can, say, hold the left/right arrow key (+ another key maybe) and have it scroll smoothly through a string of letters in the preview panel. Sorta like the texts scrolling along at the bottom of televised news segment :slight_smile: