Online collaboration for normal texts, you often have not only flat lists but
Hierarchies. Such as main issue XY, possible ways to adress that issue, pro & contra about those solutions, opinions etc. Some online editors have non-flat listing, i.e. Google docs.
However, if you start filling those hierarchies, it's very common to loose overview, and get lost. Folding is cool, it exists in some desktop text editors, and of course in IDEs such as Eclipse and intellij. In Google wave, there was the possibility to have comments and fold/expand. Unfortunately, it seems there is no easy to use and free on-line service offering a Google wave-like experience. The Google wave clones don't seem to be ready?
This seems like a pretty basic and obvious need, yet I can't find a solution. Is there something like this? It should be free & open source. If it's made for programmers, it's ok unless it's programming specific functions are not overwhelming for non-programmers. Furthermore, text folding often works only when writing actual code, i.e. A method body. It would be great to have it also for normal text, without having to do {} or similar.
