| # | Line 1370 | Line 1370 | programs and directs the use of a scene description. | |
|---|---|---|
| 1370 | .I Rview | |
| 1371 | is ray-tracing program for viewing a scene interactively. | |
| 1372 | When the user specifies a new perspective, | |
| 1373 | < | .I rview |
| 1373 | > | .I rvu |
| 1374 | quickly displays a rough | |
| 1375 | image on the terminal, then progressively | |
| 1376 | increases the resolution as the user looks on. | |
| – | Removed lines |
| + | Added lines |
| < | Changed lines |
| > | Changed lines |