I think there's a terminology confusion here. I call kdiff3 and BC a three-panel display, because it shows the original and the two changed versions as three pa

I think there's a terminology confusion here. I call kdiff3 and BC a three-panel display, because it shows the original and the two changed versions as three panels next to each other. Since the result is shown separately below, I don't include it in the panel count. I only realized that strictly speaking you could also count it as a panel from your post.