all_optimizers          All optimizers list.
max_optimizers          Max optimizers list.
opt_common_subexpr      Optimizer: Common Subexpression Elimination.
opt_constant_folding    Optimizer: Constant Folding.
opt_constant_propagation
                        Optimizer: Constant Propagation.
opt_dead_code           Optimizer: Dead Code Elimination.
opt_dead_expr           Optimizer: Dead Expression Elimination.
opt_dead_store          Optimizer: Dead Store Elimination.
opt_loop_invariant      Optimizer: Loop-invariant Code Motion.
optimize_files          Optimize '.R' files.
optimize_folder         Optimize a folder with '.R' files.
optimize_text           Optimize text containing code.
rco_gui                 rco GUI selector.
