| # | Line 30 | Line 30 | Input for each ray is: | |
|---|---|---|
| 30 | If the direction vector is (0,0,0), a bogus record | |
| 31 | is printed and the output is flushed if the | |
| 32 | .I -x | |
| 33 | < | value is unset or zero. |
| 33 | > | value is one or zero. |
| 34 | (See the notes on this option below.)\0 | |
| 35 | This may be useful for programs that run | |
| 36 | .I rtrace | |
| – | Removed lines |
| + | Added lines |
| < | Changed lines |
| > | Changed lines |