[psychoslave]

I like how it unfold the text, but it doesn't give visual hint on what was unfolded, and doesn't provide a way to fold it again, it seems.

Be it topographic emphasize or coloring, there should be an hint. And clicking the text thus emphasized should collapse it.

That's my opinion, otherwise, nice done.

[StavrosK]

It should animate the text while unfolding, but, other than that, there's no need to know what was unfolded. You just click what you don't know and eventually read the relevant info!