No default value: stop if the variable was not found.
Definition at line 97 of file IO_Flags.hh.
Referenced by pism::bed::BedDef::apply_topg_offset(), pism::IceRegionalModel::bootstrap_2d(), pism::hydrology::Distributed::bootstrap_impl(), pism::hydrology::SteadyState::bootstrap_impl(), pism::MohrCoulombYieldStress::bootstrap_impl(), pism::ocean::PicoGeometry::init(), pism::calving::vonMisesCalving::init(), pism::energy::EnergyModel::init_enthalpy(), pism::stressbalance::PrescribedSliding::init_impl(), pism::atmosphere::CosineYearlyCycle::init_impl(), pism::surface::PIK::init_impl(), pism::surface::ForceThickness::init_impl(), pism::surface::ISMIP6::init_impl(), pism::surface::TemperatureIndex::init_impl(), pism::energy::BedThermalUnit::init_impl(), pism::bed::BedDef::init_impl(), pism::bed::Given::init_impl(), pism::atmosphere::YearlyCycle::init_internal(), pism::OptTillphiYieldStress::init_usurf_target(), pism::IceModel::regrid(), and pism::Component::regrid().