in ``-help`` can be modified prior to calling `cl::ParseCommandLineOptions`_.
Note this method should not be called during any static initialisation because
it cannot be guaranteed that all options will have been initialised. Hence it
in ``-help`` can be modified prior to calling `cl::ParseCommandLineOptions`_.
Note this method should not be called during any static initialisation because
it cannot be guaranteed that all options will have been initialised. Hence it