What is meant here by "content switch threshold" and does this make FF faster?
===

On this page of [Firefox-speed tips][1](a little dated, 2008), it says:




> If you haven't moved your mouse or touched the keyboard for 0.75
> seconds (the content switch threshold) then Firefox enters a low
> frequency interrupt mode, which means its interface becomes less
> responsive but your page loads more quickly. Reducing the content
> switch threshold can improve performance, then, and it only takes a
> moment. Type about:config and press [Enter], right-click in the window
> and select New > Integer. Type content.switch.threshold, click OK,
> enter 250000 (a quarter of a second) and click OK to finish.

What's meant by this "content switch threshold"  - like switching tabs, for example?

  [1]: http://www.techradar.com/news/software/applications/8-hacks-to-make-firefox-ridiculously-fast-468317