Collection_select and API docs questions

Hello,

I’m wondering where in the docs am I suppose to find a complete list of
options for the collection_select helper?

For instance the API docs have an example for the select helper as
below:

select(“post”, “person_id”, Person.find_all.collect {|p| [ p.name,
p.id ] }, { :include_blank => true })

Where the heck do I find valid values for the options and html options?
(ie. :include_blank ) No where on the page is there a description of
what the options or html options is for and what values I can use.
Seems rather deficient in it’s it’s completeness.

Any help would be appreciated.

Thanks,
Phill