Light Path Expression Builder
| Symbol | Description | Type | Final |
|---|---|---|---|
| C | Camera ray | Initial ray spawn event | No |
| R | Reflection ray | Ray spawn event | No |
| T | Transmission ray | Ray spawn event | No |
| V | Volume ray | Ray spawn event | No |
| . | Arbitrary ray spawn event | Ray spawn event | No |
| D | Diffuse scattering | Scattering type | No |
| G | Glossy scattering | Scattering type | No |
| S | Singular scattering | Scattering type | No |
| s | Straight (no) scattering | Scattering type | No |
| . | Arbitrary scattering type | Scattering type | No |
| L | Light hit | Path termination event | Yes |
| O | Emitting object hit | Path termination event | Yes |
| B | Background hit | Path termination event | Yes |
| ? | Zero or one repetitions | Modifier | No |
| + | One or more repetitions | Modifier | No |
| * | Zero or more repetitions | Modifier | No |