"  -D<name[=def]> | --define-macro <name[=def]> | --D <name[=def]>\n"
           "              define a pre-processor macro\n"
           "  -H          print human readable form of SPIR-V; turns on -V\n"
           "  -U<name> | --undef-macro <name> | --U <name>\n"
           "              undefine a pre-processor macro\n"
           "  -e <name> | --entry-point <name>\n"
           "              specify <name> as the entry-point function name\n"

           "  --invert-y | --iy                 invert position.Y output in vertex shader\n"
           "  --nan-clamp                       favor non-NaN operand in min, max, and clamp\n"
        
           "  --source-entrypoint <name>        the given shader source function is\n"
           "                                    renamed to be the <name> given in -e\n"