Iron Shield geometry control.
| choice | type s | Parameter candidates : on off |
| choice | type s |
| fIronShieldThickness | type d | ||
| Unit | type s | Parameter candidates : pc km m cm mm um nm Ang fm parsec kilometer meter centimeter millimeter micrometer nanometer angstrom fermi |
| fIronShieldOffset | type d | ||
| Unit | type s | Parameter candidates : pc km m cm mm um nm Ang fm parsec kilometer meter centimeter millimeter micrometer nanometer angstrom fermi |