What documentation software is using Ruby on Rails 3.1? [closed]

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Some time ago I read the changelog of a Ruby on Rails version (I think 3.1.0). In that was written that the documentation "system"/"software" was changed. The current can be browsed here.

What is the new documentation software used by Rails? Where I can find that and the related documentation? How should I use that?

Answer 1

screenshot http://pix.am/AeJE.png

This gives us a hint that it is made with RDoc. I thought, however, that they are using YARD now.

Answer 2

They switched to SDoc for version 3.1. The announcement is here: http://weblog.rubyonrails.org/2011/8/29/the-rails-api-switches-to-sdoc

This post provides good instructions: https://stackoverflow.com/a/7463142/8179