In wikitech-l today, Gabriel Wicke wrote:
"In short, using Parsoid directly for visual editing is an unsupported configuration, and is likely to stop working altogether in the foreseeable future.
If this is the case, then shouldn't Parsoid/Setup say this loud and clear? RESTbase is barely mentioned at the end of the article (without any description of what it is or why you'd use it). Thank you.