Operations on Geant4 viewers.
| viewer-name | type s | Omittable : current value is used as the default value. |
| scene-handler | type s | Omittable : current value is used as the default value. | |
| viewer-name | type s | Omittable : current value is used as the default value. | |
| pixels | type d | Omittable : current value is used as the default value. |
| increment | type d | Omittable : current value is used as the default value. | |
| Unit | type s | Omittable : default value = m | Parameter candidates : pc km m cm mm mum nm Ang fm parsec kilometer meter centimeter millimeter micrometer nanometer angstrom fermi |
| distance | type d | Omittable : current value is used as the default value. | |
| Unit | type s | Omittable : default value = m | Parameter candidates : pc km m cm mm mum nm Ang fm parsec kilometer meter centimeter millimeter micrometer nanometer angstrom fermi |
| viewer-name | type s | Omittable : current value is used as the default value. |
| viewer-name | type s | Omittable : default value = all | |
| verbosity | type s | Omittable : default value = 0 |
| right-increment | type d | Omittable : current value is used as the default value. | |
| up-increment | type d | Omittable : current value is used as the default value. | |
| unit | type s | Omittable : default value = m |
| right | type d | Omittable : current value is used as the default value. | |
| up | type d | Omittable : current value is used as the default value. | |
| unit | type s | Omittable : default value = m |
| viewer-name | type s | Omittable : current value is used as the default value. |
| viewer-name | type s |
| viewer-name | type s | Omittable : current value is used as the default value. |
| viewer-name | type s |
| viewer-name | type s | Omittable : current value is used as the default value. |
| multiplier | type d | Omittable : current value is used as the default value. |
| factor | type d | Omittable : current value is used as the default value. |