Called by :
med_sidata_input (main/real_em.F)Uses:
      real_data (main/real_em.F)
MODULE_CONFIGURE (frame/module_configure.F) MODULE_DOMAIN (frame/module_domain.F)Arguments:
1. grid :: TYPE(DOMAIN)::GRID, INTENT( INOUT ) 2. fid :: INTEGER , INTENT( IN )OPTIONAL_SI_INPUT calls :