Thanks.
I've added support for generating RDoc by Rake on master.
Could you rebase on master when this is ready to be reviewed?

13/21 options done, + a few odds and ends. For me, git rebase is deep and dark. Can I save my files, make a new fork/clone, then restore my files? Does that work?

Oh, and thanks for your interest.

OK.
I'll do it. Please notify me when you complete this.

I think this is good enough for you to look at.

• This has few changes outside of options. (Other stuff later.)
• I used #fetch, not #[] to show the option defaults, b/c it gives an error if not found.
• The options are in the order you already had (I think).

@kou, the tests did not work on my machine. Old error, I think. I ran 'rake test'.

A few more things to do for options.

@kou, ready when you are.

Back to draft; working on converters.

@kou, ready for you. I will not push anything more (except very minor corrections) until we've had a chance to begin review/remark/rework/repush. Suggest we do this piecemeal, maybe beginning with one or two options at a time?

I've rebased and reverted code changes. Because the code changes break our CI.

It was good that we create a pull request per option but we already did for many options.
I couldn't review this large change. I'll merge this time.
We can improve documents we added as follow-up pull requests.