These two commands can be used only within the <code> argument of
either \DeclareOption or \DeclareOption*. Other commands commonly
used within these arguments can be found in the next few subsections.
\CurrentOption
This expands to the name of the current option.
\OptionNotUsed
This causes the current option to be added to the list of `unused options'.
You can now include hash marks (#) within these <code> arguments without special treatment (formerly, it had been necessary to double them).